diff --git a/benchmark/zlib/creation.js b/benchmark/zlib/creation.js
index 90b22780d2d312..41b1e4917a67bb 100644
--- a/benchmark/zlib/creation.js
+++ b/benchmark/zlib/creation.js
@@ -5,7 +5,7 @@ const zlib = require('zlib');
 const bench = common.createBenchmark(main, {
   type: [
     'Deflate', 'DeflateRaw', 'Inflate', 'InflateRaw', 'Gzip', 'Gunzip', 'Unzip',
-    'BrotliCompress', 'BrotliDecompress',
+    'BrotliCompress', 'BrotliDecompress', 'ZstdCompress', 'ZstdDecompress',
   ],
   options: ['true', 'false'],
   n: [5e5],
diff --git a/benchmark/zlib/pipe.js b/benchmark/zlib/pipe.js
index a9c86e3de660a9..5a21c3ff417084 100644
--- a/benchmark/zlib/pipe.js
+++ b/benchmark/zlib/pipe.js
@@ -7,7 +7,7 @@ const bench = common.createBenchmark(main, {
   inputLen: [1024],
   duration: [5],
   type: ['string', 'buffer'],
-  algorithm: ['gzip', 'brotli'],
+  algorithm: ['gzip', 'brotli', 'zstd'],
 }, {
   test: {
     inputLen: 1024,
@@ -15,14 +15,19 @@ const bench = common.createBenchmark(main, {
   },
 });
 
+const algorithms = {
+  'gzip': [zlib.createGzip, zlib.createGunzip],
+  'brotli': [zlib.createBrotliCompress, zlib.createBrotliDecompress],
+  'zstd': [zlib.createZstdCompress, zlib.createZstdDecompress],
+};
+
 function main({ inputLen, duration, type, algorithm }) {
   const buffer = Buffer.alloc(inputLen, fs.readFileSync(__filename));
   const chunk = type === 'buffer' ? buffer : buffer.toString('utf8');
 
-  const input = algorithm === 'gzip' ?
-    zlib.createGzip() : zlib.createBrotliCompress();
-  const output = algorithm === 'gzip' ?
-    zlib.createGunzip() : zlib.createBrotliDecompress();
+  const [createCompress, createUncompress] = algorithms[algorithm];
+  const input = createCompress();
+  const output = createUncompress();
 
   let readFromOutput = 0;
   input.pipe(output);
diff --git a/doc/api/zlib.md b/doc/api/zlib.md
index a33de3833cbe9f..da1979dbdce63d 100644
--- a/doc/api/zlib.md
+++ b/doc/api/zlib.md
@@ -124,8 +124,8 @@ operations be cached to avoid duplication of effort.
 
 ## Compressing HTTP requests and responses
 
-The `node:zlib` module can be used to implement support for the `gzip`, `deflate`
-and `br` content-encoding mechanisms defined by
+The `node:zlib` module can be used to implement support for the `gzip`, `deflate`,
+`br` and `zstd` content-encoding mechanisms defined by
 [HTTP](https://tools.ietf.org/html/rfc7230#section-4.2).
 
 The HTTP [`Accept-Encoding`][] header is used within an HTTP request to identify
@@ -148,7 +148,7 @@ const { pipeline } = require('node:stream');
 const request = http.get({ host: 'example.com',
                            path: '/',
                            port: 80,
-                           headers: { 'Accept-Encoding': 'br,gzip,deflate' } });
+                           headers: { 'Accept-Encoding': 'br,gzip,deflate,zstd' } });
 request.on('response', (response) => {
   const output = fs.createWriteStream('example.com_index.html');
 
@@ -170,6 +170,9 @@ request.on('response', (response) => {
     case 'deflate':
       pipeline(response, zlib.createInflate(), output, onError);
       break;
+    case 'zstd':
+      pipeline(response, zlib.createZstdDecompress(), output, onError);
+      break;
     default:
       pipeline(response, output, onError);
       break;
@@ -218,6 +221,9 @@ http.createServer((request, response) => {
   } else if (/\bbr\b/.test(acceptEncoding)) {
     response.writeHead(200, { 'Content-Encoding': 'br' });
     pipeline(raw, zlib.createBrotliCompress(), response, onError);
+  } else if (/\bzstd\b/.test(acceptEncoding)) {
+    response.writeHead(200, { 'Content-Encoding': 'zstd' });
+    pipeline(raw, zlib.createZstdCompress(), response, onError);
   } else {
     response.writeHead(200, {});
     pipeline(raw, response, onError);
@@ -238,6 +244,7 @@ const buffer = Buffer.from('eJzT0yMA', 'base64');
 zlib.unzip(
   buffer,
   // For Brotli, the equivalent is zlib.constants.BROTLI_OPERATION_FLUSH.
+  // For Zstd, the equivalent is zlib.constants.ZSTD_e_flush.
   { finishFlush: zlib.constants.Z_SYNC_FLUSH },
   (err, buffer) => {
     if (err) {
@@ -309,6 +316,16 @@ these options have different ranges than the zlib ones:
 
 See [below][Brotli parameters] for more details on Brotli-specific options.
 
+### For Zstd-based streams
+
+There are equivalents to the zlib options for Zstd-based streams, although
+these options have different ranges than the zlib ones:
+
+* zlib's `level` option matches Zstd's `ZSTD_c_compressionLevel` option.
+* zlib's `windowBits` option matches Zstd's `ZSTD_c_windowLog` option.
+
+See [below][Zstd parameters] for more details on Zstd-specific options.
+
 ## Flushing
 
 Calling [`.flush()`][] on a compression stream will make `zlib` return as much
@@ -487,6 +504,44 @@ These advanced options are available for controlling decompression:
   * Boolean flag enabling “Large Window Brotli” mode (not compatible with the
     Brotli format as standardized in [RFC 7932][]).
 
+### Zstd constants
+
+<!-- YAML
+added: REPLACEME
+-->
+
+There are several options and other constants available for Zstd-based
+streams:
+
+#### Flush operations
+
+The following values are valid flush operations for Zstd-based streams:
+
+* `zlib.constants.ZSTD_e_continue` (default for all operations)
+* `zlib.constants.ZSTD_e_flush` (default when calling `.flush()`)
+* `zlib.constants.ZSTD_e_end` (default for the last chunk)
+
+#### Compressor options
+
+There are several options that can be set on Zstd encoders, affecting
+compression efficiency and speed. Both the keys and the values can be accessed
+as properties of the `zlib.constants` object.
+
+The most important options are:
+
+* `ZSTD_c_compressionLevel`
+  * Set compression parameters according to pre-defined cLevel table. Default
+    level is ZSTD_CLEVEL_DEFAULT==3.
+
+#### Decompressor options
+
+These advanced options are available for controlling decompression:
+
+* `ZSTD_d_windowLogMax`
+  * Select a size limit (in power of 2) beyond which the streaming API will
+    refuse to allocate memory buffer in order to protect the host from
+    unreasonable memory requirements.
+
 ## Class: `Options`
 
 <!-- YAML
diff --git a/lib/internal/errors.js b/lib/internal/errors.js
index ef4295f9eaaaef..fc0309dc42ce06 100644
--- a/lib/internal/errors.js
+++ b/lib/internal/errors.js
@@ -1917,3 +1917,4 @@ E('ERR_WORKER_UNSERIALIZABLE_ERROR',
 E('ERR_WORKER_UNSUPPORTED_OPERATION',
   '%s is not supported in workers', TypeError);
 E('ERR_ZLIB_INITIALIZATION_FAILED', 'Initialization failed', Error);
+E('ERR_ZSTD_INVALID_PARAM', '%s is not a valid zstd parameter', RangeError);
diff --git a/lib/zlib.js b/lib/zlib.js
index 4eaf1976e7d09f..6dfeb6280aab35 100644
--- a/lib/zlib.js
+++ b/lib/zlib.js
@@ -49,6 +49,7 @@ const {
     ERR_INVALID_ARG_TYPE,
     ERR_OUT_OF_RANGE,
     ERR_ZLIB_INITIALIZATION_FAILED,
+    ERR_ZSTD_INVALID_PARAM,
   },
   genericNodeError,
   hideStackFrames,
@@ -88,9 +89,12 @@ const {
   // Node's compression stream modes (node_zlib_mode)
   DEFLATE, DEFLATERAW, INFLATE, INFLATERAW, GZIP, GUNZIP, UNZIP,
   BROTLI_DECODE, BROTLI_ENCODE,
+  ZSTD_COMPRESS, ZSTD_DECOMPRESS,
   // Brotli operations (~flush levels)
   BROTLI_OPERATION_PROCESS, BROTLI_OPERATION_FLUSH,
   BROTLI_OPERATION_FINISH, BROTLI_OPERATION_EMIT_METADATA,
+  // Zstd end directives (~flush levels)
+  ZSTD_e_continue, ZSTD_e_flush, ZSTD_e_end,
 } = constants;
 
 // Translation table for return codes.
@@ -237,9 +241,11 @@ const checkRangesOrGetDefault = hideStackFrames(
 const FLUSH_BOUND = [
   [ Z_NO_FLUSH, Z_BLOCK ],
   [ BROTLI_OPERATION_PROCESS, BROTLI_OPERATION_EMIT_METADATA ],
+  [ ZSTD_e_continue, ZSTD_e_end ],
 ];
 const FLUSH_BOUND_IDX_NORMAL = 0;
 const FLUSH_BOUND_IDX_BROTLI = 1;
+const FLUSH_BOUND_IDX_ZSTD = 2;
 
 // The base class for all Zlib-style streams.
 function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {
@@ -248,13 +254,15 @@ function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {
   // The ZlibBase class is not exported to user land, the mode should only be
   // passed in by us.
   assert(typeof mode === 'number');
-  assert(mode >= DEFLATE && mode <= BROTLI_ENCODE);
+  assert(mode >= DEFLATE && mode <= ZSTD_DECOMPRESS);
 
   let flushBoundIdx;
-  if (mode !== BROTLI_ENCODE && mode !== BROTLI_DECODE) {
-    flushBoundIdx = FLUSH_BOUND_IDX_NORMAL;
-  } else {
+  if (mode === BROTLI_ENCODE || mode === BROTLI_DECODE) {
     flushBoundIdx = FLUSH_BOUND_IDX_BROTLI;
+  } else if (mode === ZSTD_COMPRESS || mode === ZSTD_DECOMPRESS) {
+    flushBoundIdx = FLUSH_BOUND_IDX_ZSTD;
+  } else {
+    flushBoundIdx = FLUSH_BOUND_IDX_NORMAL;
   }
 
   if (opts) {
@@ -888,6 +896,77 @@ ObjectSetPrototypeOf(BrotliDecompress.prototype, Brotli.prototype);
 ObjectSetPrototypeOf(BrotliDecompress, Brotli);
 
 
+const kMaxZstdParam = MathMaxApply(ArrayPrototypeMap(
+  ObjectKeys(constants),
+  (key) => (StringPrototypeStartsWith(key, 'ZSTD_c_') ?
+    constants[key] :
+    0),
+));
+
+const zstdInitParamsArray = new Uint32Array(kMaxZstdParam + 1);
+
+const zstdDefaultOpts = {
+  flush: ZSTD_e_continue,
+  finishFlush: ZSTD_e_end,
+  fullFlush: ZSTD_e_flush,
+};
+function Zstd(opts, mode) {
+  assert(mode === ZSTD_COMPRESS || mode === ZSTD_DECOMPRESS);
+
+  TypedArrayPrototypeFill(zstdInitParamsArray, -1);
+  if (opts?.params) {
+    ArrayPrototypeForEach(ObjectKeys(opts.params), (origKey) => {
+      const key = +origKey;
+      if (NumberIsNaN(key) || key < 0 || key > kMaxZstdParam ||
+          (zstdInitParamsArray[key] | 0) !== -1) {
+        throw new ERR_ZSTD_INVALID_PARAM(origKey);
+      }
+
+      const value = opts.params[origKey];
+      if (typeof value !== 'number' && typeof value !== 'boolean') {
+        throw new ERR_INVALID_ARG_TYPE('options.params[key]',
+                                       'number', opts.params[origKey]);
+      }
+      zstdInitParamsArray[key] = value;
+    });
+  }
+
+  const handle = mode === ZSTD_COMPRESS ?
+      new binding.ZstdCompress() : new binding.ZstdDecompress();
+
+  this._writeState = new Uint32Array(2);
+  if (!handle.init(zstdInitParamsArray,
+                   this._writeState,
+                   processCallback)) {
+    throw new ERR_ZLIB_INITIALIZATION_FAILED();
+  }
+
+  ReflectApply(ZlibBase, this, [opts, mode, handle, zstdDefaultOpts]);
+}
+ObjectSetPrototypeOf(Zstd.prototype, ZlibBase.prototype);
+ObjectSetPrototypeOf(Zstd, ZlibBase);
+
+
+function ZstdCompress(opts) {
+  if (!(this instanceof ZstdCompress))
+    return new ZstdCompress(opts);
+
+  ReflectApply(Zstd, this, [opts, ZSTD_COMPRESS]);
+}
+ObjectSetPrototypeOf(ZstdCompress.prototype, Zstd.prototype);
+ObjectSetPrototypeOf(ZstdCompress, Zstd);
+
+
+function ZstdDecompress(opts) {
+  if (!(this instanceof ZstdDecompress))
+    return new ZstdDecompress(opts);
+
+  ReflectApply(Zstd, this, [opts, ZSTD_DECOMPRESS]);
+}
+ObjectSetPrototypeOf(ZstdDecompress.prototype, Zstd.prototype);
+ObjectSetPrototypeOf(ZstdDecompress, Zstd);
+
+
 function createProperty(ctor) {
   return {
     __proto__: null,
@@ -917,6 +996,8 @@ module.exports = {
   Unzip,
   BrotliCompress,
   BrotliDecompress,
+  ZstdCompress,
+  ZstdDecompress,
 
   // Convenience methods.
   // compress/decompress a string or buffer in one step.
@@ -938,6 +1019,10 @@ module.exports = {
   brotliCompressSync: createConvenienceMethod(BrotliCompress, true),
   brotliDecompress: createConvenienceMethod(BrotliDecompress, false),
   brotliDecompressSync: createConvenienceMethod(BrotliDecompress, true),
+  zstdCompress: createConvenienceMethod(ZstdCompress, false),
+  zstdCompressSync: createConvenienceMethod(ZstdCompress, true),
+  zstdDecompress: createConvenienceMethod(ZstdDecompress, false),
+  zstdDecompressSync: createConvenienceMethod(ZstdDecompress, true),
 };
 
 ObjectDefineProperties(module.exports, {
@@ -950,6 +1035,8 @@ ObjectDefineProperties(module.exports, {
   createUnzip: createProperty(Unzip),
   createBrotliCompress: createProperty(BrotliCompress),
   createBrotliDecompress: createProperty(BrotliDecompress),
+  createZstdCompress: createProperty(ZstdCompress),
+  createZstdDecompress: createProperty(ZstdDecompress),
   constants: {
     __proto__: null,
     configurable: false,
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 0c4ae0fc794347..ba536673182f6d 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -34,6 +34,8 @@
 #include "brotli/encode.h"
 #include "brotli/decode.h"
 #include "zlib.h"
+#include "zstd.h"
+#include "zstd_errors.h"
 
 #include <sys/types.h>
 
@@ -94,6 +96,44 @@ inline const char* ZlibStrerror(int err) {
   return "Z_UNKNOWN_ERROR";
 }
 
+#define ZSTD_ERROR_CODES(V)                                                    \
+  V(ZSTD_error_no_error)                                                       \
+  V(ZSTD_error_GENERIC)                                                        \
+  V(ZSTD_error_prefix_unknown)                                                 \
+  V(ZSTD_error_version_unsupported)                                            \
+  V(ZSTD_error_frameParameter_unsupported)                                     \
+  V(ZSTD_error_frameParameter_windowTooLarge)                                  \
+  V(ZSTD_error_corruption_detected)                                            \
+  V(ZSTD_error_checksum_wrong)                                                 \
+  V(ZSTD_error_literals_headerWrong)                                           \
+  V(ZSTD_error_dictionary_corrupted)                                           \
+  V(ZSTD_error_dictionary_wrong)                                               \
+  V(ZSTD_error_dictionaryCreation_failed)                                      \
+  V(ZSTD_error_parameter_unsupported)                                          \
+  V(ZSTD_error_parameter_combination_unsupported)                              \
+  V(ZSTD_error_parameter_outOfBound)                                           \
+  V(ZSTD_error_tableLog_tooLarge)                                              \
+  V(ZSTD_error_maxSymbolValue_tooLarge)                                        \
+  V(ZSTD_error_maxSymbolValue_tooSmall)                                        \
+  V(ZSTD_error_stabilityCondition_notRespected)                                \
+  V(ZSTD_error_stage_wrong)                                                    \
+  V(ZSTD_error_init_missing)                                                   \
+  V(ZSTD_error_memory_allocation)                                              \
+  V(ZSTD_error_workSpace_tooSmall)                                             \
+  V(ZSTD_error_dstSize_tooSmall)                                               \
+  V(ZSTD_error_srcSize_wrong)                                                  \
+  V(ZSTD_error_dstBuffer_null)                                                 \
+  V(ZSTD_error_noForwardProgress_destFull)                                     \
+  V(ZSTD_error_noForwardProgress_inputEmpty)
+
+inline const char* ZstdStrerror(int err) {
+#define V(code)                                                                \
+  if (err == code) return #code;
+  ZSTD_ERROR_CODES(V)
+#undef V
+  return "ZSTD_error_GENERIC";
+}
+
 enum node_zlib_mode {
   NONE,
   DEFLATE,
@@ -104,7 +144,9 @@ enum node_zlib_mode {
   INFLATERAW,
   UNZIP,
   BROTLI_DECODE,
-  BROTLI_ENCODE
+  BROTLI_ENCODE,
+  ZSTD_COMPRESS,
+  ZSTD_DECOMPRESS
 };
 
 constexpr uint8_t GZIP_HEADER_ID1 = 0x1f;
@@ -248,6 +290,80 @@ class BrotliDecoderContext final : public BrotliContext {
   DeleteFnPtr<BrotliDecoderState, BrotliDecoderDestroyInstance> state_;
 };
 
+class ZstdContext : public MemoryRetainer {
+ public:
+  ZstdContext() = default;
+
+  // Streaming-related, should be available for all compression libraries:
+  void Close();
+  void SetBuffers(const char* in, uint32_t in_len, char* out, uint32_t out_len);
+  void SetFlush(int flush);
+  void GetAfterWriteOffsets(uint32_t* avail_in, uint32_t* avail_out) const;
+  CompressionError GetErrorInfo() const;
+
+  ZstdContext(const ZstdContext&) = delete;
+  ZstdContext& operator=(const ZstdContext&) = delete;
+
+  // Wrap ZSTD_freeCCtx to remove the return type.
+  static void FreeCCtx(ZSTD_CCtx* cctx) { ZSTD_freeCCtx(cctx); }
+
+ protected:
+  ZSTD_EndDirective flush_ = ZSTD_e_continue;
+
+  ZSTD_inBuffer input_ = {nullptr, 0, 0};
+  ZSTD_outBuffer output_ = {nullptr, 0, 0};
+
+  ZSTD_ErrorCode error_ = ZSTD_error_no_error;
+  std::string error_string_;
+  std::string error_code_string_;
+};
+
+class ZstdCompressContext final : public ZstdContext {
+ public:
+  ZstdCompressContext() = default;
+
+  // Streaming-related, should be available for all compression libraries:
+  void DoThreadPoolWork();
+  CompressionError ResetStream();
+
+  // Zstd specific:
+  CompressionError Init();
+  CompressionError SetParameter(int key, uint32_t value);
+
+  // Wrap ZSTD_freeCCtx to remove the return type.
+  static void FreeCCtx(ZSTD_CCtx* cctx) { ZSTD_freeCCtx(cctx); }
+
+  SET_MEMORY_INFO_NAME(ZstdCompressContext)
+  SET_SELF_SIZE(ZstdCompressContext)
+  SET_NO_MEMORY_INFO()
+
+ private:
+  DeleteFnPtr<ZSTD_CCtx, ZstdCompressContext::FreeCCtx> cctx_;
+};
+
+class ZstdDecompressContext final : public ZstdContext {
+ public:
+  ZstdDecompressContext() = default;
+
+  // Streaming-related, should be available for all compression libraries:
+  void DoThreadPoolWork();
+  CompressionError ResetStream();
+
+  // Zstd specific:
+  CompressionError Init();
+  CompressionError SetParameter(int key, uint32_t value);
+
+  // Wrap ZSTD_freeDCtx to remove the return type.
+  static void FreeDCtx(ZSTD_DCtx* dctx) { ZSTD_freeDCtx(dctx); }
+
+  SET_MEMORY_INFO_NAME(ZstdDecompressContext)
+  SET_SELF_SIZE(ZstdDecompressContext)
+  SET_NO_MEMORY_INFO()
+
+ private:
+  DeleteFnPtr<ZSTD_DCtx, ZstdDecompressContext::FreeDCtx> dctx_;
+};
+
 template <typename CompressionContext>
 class CompressionStream : public AsyncWrap, public ThreadPoolWork {
  public:
@@ -730,6 +846,74 @@ class BrotliCompressionStream final :
 using BrotliEncoderStream = BrotliCompressionStream<BrotliEncoderContext>;
 using BrotliDecoderStream = BrotliCompressionStream<BrotliDecoderContext>;
 
+template <typename CompressionContext>
+class ZstdStream final : public CompressionStream<CompressionContext> {
+ public:
+  ZstdStream(Environment* env, Local<Object> wrap)
+      : CompressionStream<CompressionContext>(env, wrap) {}
+
+  inline CompressionContext* context() {
+    return this->CompressionStream<CompressionContext>::context();
+  }
+  typedef typename CompressionStream<CompressionContext>::AllocScope AllocScope;
+
+  static void New(const FunctionCallbackInfo<Value>& args) {
+    Environment* env = Environment::GetCurrent(args);
+    new ZstdStream(env, args.This());
+  }
+
+  static void Init(const FunctionCallbackInfo<Value>& args) {
+    CHECK(args.Length() == 3 && "init(params, writeResult, writeCallback)");
+    ZstdStream* wrap;
+    ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
+
+    CHECK(args[1]->IsUint32Array());
+    uint32_t* write_result = reinterpret_cast<uint32_t*>(Buffer::Data(args[1]));
+
+    CHECK(args[2]->IsFunction());
+    Local<Function> write_js_callback = args[2].As<Function>();
+    wrap->InitStream(write_result, write_js_callback);
+
+    AllocScope alloc_scope(wrap);
+    CompressionError err = wrap->context()->Init();
+    if (err.IsError()) {
+      wrap->EmitError(err);
+      args.GetReturnValue().Set(false);
+      return;
+    }
+
+    CHECK(args[0]->IsUint32Array());
+    const uint32_t* data = reinterpret_cast<uint32_t*>(Buffer::Data(args[0]));
+    size_t len = args[0].As<Uint32Array>()->Length();
+
+    for (int i = 0; static_cast<size_t>(i) < len; i++) {
+      if (data[i] == static_cast<uint32_t>(-1)) continue;
+
+      CompressionError err = wrap->context()->SetParameter(i, data[i]);
+      if (err.IsError()) {
+        wrap->EmitError(err);
+        args.GetReturnValue().Set(false);
+        return;
+      }
+    }
+
+    args.GetReturnValue().Set(true);
+  }
+
+  static void Params(const FunctionCallbackInfo<Value>& args) {
+    // Currently a no-op, and not accessed from JS land.
+    // At some point zstd may support changing parameters on the fly,
+    // in which case we can implement this and a JS equivalent similar to
+    // the zlib Params() function.
+  }
+
+  SET_MEMORY_INFO_NAME(ZstdStream)
+  SET_SELF_SIZE(ZstdStream)
+};
+
+using ZstdCompressStream = ZstdStream<ZstdCompressContext>;
+using ZstdDecompressStream = ZstdStream<ZstdDecompressContext>;
+
 void ZlibContext::Close() {
   {
     Mutex::ScopedLock lock(mutex_);
@@ -1253,6 +1437,109 @@ CompressionError BrotliDecoderContext::GetErrorInfo() const {
   }
 }
 
+void ZstdContext::Close() {}
+
+void ZstdContext::SetBuffers(const char* in,
+                             uint32_t in_len,
+                             char* out,
+                             uint32_t out_len) {
+  input_.src = reinterpret_cast<const uint8_t*>(in);
+  input_.size = in_len;
+  input_.pos = 0;
+
+  output_.dst = reinterpret_cast<uint8_t*>(out);
+  output_.size = out_len;
+  output_.pos = 0;
+}
+
+void ZstdContext::SetFlush(int flush) {
+  flush_ = static_cast<ZSTD_EndDirective>(flush);
+}
+
+void ZstdContext::GetAfterWriteOffsets(uint32_t* avail_in,
+                                       uint32_t* avail_out) const {
+  *avail_in = input_.size - input_.pos;
+  *avail_out = output_.size - output_.pos;
+}
+
+CompressionError ZstdContext::GetErrorInfo() const {
+  if (error_ != ZSTD_error_no_error) {
+    return CompressionError(error_string_.c_str(),
+                            error_code_string_.c_str(),
+                            static_cast<int>(error_));
+  } else {
+    return CompressionError{};
+  }
+}
+
+CompressionError ZstdCompressContext::SetParameter(int key, uint32_t value) {
+  size_t result = ZSTD_CCtx_setParameter(
+      cctx_.get(), static_cast<ZSTD_cParameter>(key), value);
+  if (ZSTD_isError(result)) {
+    return CompressionError(
+        "Setting parameter failed", "ERR_ZSTD_PARAM_SET_FAILED", -1);
+  }
+  return CompressionError{};
+}
+
+CompressionError ZstdCompressContext::Init() {
+  cctx_.reset(ZSTD_createCCtx());
+  if (!cctx_) {
+    return CompressionError("Could not initialize zstd instance",
+                            "ERR_ZLIB_INITIALIZATION_FAILED",
+                            -1);
+  }
+  return CompressionError{};
+}
+
+CompressionError ZstdCompressContext::ResetStream() {
+  return Init();
+}
+
+void ZstdCompressContext::DoThreadPoolWork() {
+  size_t const remaining =
+      ZSTD_compressStream2(cctx_.get(), &output_, &input_, flush_);
+  if (ZSTD_isError(remaining)) {
+    error_ = ZSTD_getErrorCode(remaining);
+    error_code_string_ = ZstdStrerror(error_);
+    error_string_ = ZSTD_getErrorString(error_);
+    return;
+  }
+}
+
+CompressionError ZstdDecompressContext::SetParameter(int key, uint32_t value) {
+  size_t result = ZSTD_DCtx_setParameter(
+      dctx_.get(), static_cast<ZSTD_dParameter>(key), value);
+  if (ZSTD_isError(result)) {
+    return CompressionError(
+        "Setting parameter failed", "ERR_ZSTD_PARAM_SET_FAILED", -1);
+  }
+  return CompressionError{};
+}
+
+CompressionError ZstdDecompressContext::Init() {
+  dctx_.reset(ZSTD_createDCtx());
+  if (!dctx_) {
+    return CompressionError("Could not initialize zstd instance",
+                            "ERR_ZLIB_INITIALIZATION_FAILED",
+                            -1);
+  }
+  return CompressionError{};
+}
+
+CompressionError ZstdDecompressContext::ResetStream() {
+  return Init();
+}
+
+void ZstdDecompressContext::DoThreadPoolWork() {
+  size_t const ret = ZSTD_decompressStream(dctx_.get(), &output_, &input_);
+  if (ZSTD_isError(ret)) {
+    error_ = ZSTD_getErrorCode(ret);
+    error_code_string_ = ZstdStrerror(error_);
+    error_string_ = ZSTD_getErrorString(error_);
+    return;
+  }
+}
 
 template <typename Stream>
 struct MakeClass {
@@ -1295,6 +1582,8 @@ void Initialize(Local<Object> target,
   MakeClass<ZlibStream>::Make(env, target, "Zlib");
   MakeClass<BrotliEncoderStream>::Make(env, target, "BrotliEncoder");
   MakeClass<BrotliDecoderStream>::Make(env, target, "BrotliDecoder");
+  MakeClass<ZstdCompressStream>::Make(env, target, "ZstdCompress");
+  MakeClass<ZstdDecompressStream>::Make(env, target, "ZstdDecompress");
 
   target->Set(env->context(),
               FIXED_ONE_BYTE_STRING(env->isolate(), "ZLIB_VERSION"),
@@ -1305,6 +1594,8 @@ void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   MakeClass<ZlibStream>::Make(registry);
   MakeClass<BrotliEncoderStream>::Make(registry);
   MakeClass<BrotliDecoderStream>::Make(registry);
+  MakeClass<ZstdCompressStream>::Make(registry);
+  MakeClass<ZstdDecompressStream>::Make(registry);
 }
 
 }  // anonymous namespace
@@ -1348,6 +1639,8 @@ void DefineZlibConstants(Local<Object> target) {
   NODE_DEFINE_CONSTANT(target, UNZIP);
   NODE_DEFINE_CONSTANT(target, BROTLI_DECODE);
   NODE_DEFINE_CONSTANT(target, BROTLI_ENCODE);
+  NODE_DEFINE_CONSTANT(target, ZSTD_DECOMPRESS);
+  NODE_DEFINE_CONSTANT(target, ZSTD_COMPRESS);
 
   NODE_DEFINE_CONSTANT(target, Z_MIN_WINDOWBITS);
   NODE_DEFINE_CONSTANT(target, Z_MAX_WINDOWBITS);
@@ -1427,6 +1720,69 @@ void DefineZlibConstants(Local<Object> target) {
   NODE_DEFINE_CONSTANT(target, BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2);
   NODE_DEFINE_CONSTANT(target, BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES);
   NODE_DEFINE_CONSTANT(target, BROTLI_DECODER_ERROR_UNREACHABLE);
+
+  // Zstd constants
+  NODE_DEFINE_CONSTANT(target, ZSTD_e_continue);
+  NODE_DEFINE_CONSTANT(target, ZSTD_e_flush);
+  NODE_DEFINE_CONSTANT(target, ZSTD_e_end);
+  NODE_DEFINE_CONSTANT(target, ZSTD_fast);
+  NODE_DEFINE_CONSTANT(target, ZSTD_dfast);
+  NODE_DEFINE_CONSTANT(target, ZSTD_greedy);
+  NODE_DEFINE_CONSTANT(target, ZSTD_lazy);
+  NODE_DEFINE_CONSTANT(target, ZSTD_lazy2);
+  NODE_DEFINE_CONSTANT(target, ZSTD_btlazy2);
+  NODE_DEFINE_CONSTANT(target, ZSTD_btopt);
+  NODE_DEFINE_CONSTANT(target, ZSTD_btultra);
+  NODE_DEFINE_CONSTANT(target, ZSTD_btultra2);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_compressionLevel);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_windowLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_hashLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_chainLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_searchLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_minMatch);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_targetLength);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_strategy);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_enableLongDistanceMatching);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_ldmHashLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_ldmMinMatch);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_ldmBucketSizeLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_ldmHashRateLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_contentSizeFlag);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_checksumFlag);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_dictIDFlag);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_nbWorkers);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_jobSize);
+  NODE_DEFINE_CONSTANT(target, ZSTD_c_overlapLog);
+  NODE_DEFINE_CONSTANT(target, ZSTD_d_windowLogMax);
+  // Error codes
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_no_error);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_GENERIC);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_prefix_unknown);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_version_unsupported);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_frameParameter_unsupported);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_frameParameter_windowTooLarge);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_corruption_detected);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_checksum_wrong);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_literals_headerWrong);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_dictionary_corrupted);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_dictionary_wrong);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_dictionaryCreation_failed);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_parameter_unsupported);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_parameter_combination_unsupported);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_parameter_outOfBound);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_tableLog_tooLarge);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_maxSymbolValue_tooLarge);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_maxSymbolValue_tooSmall);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_stabilityCondition_notRespected);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_stage_wrong);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_init_missing);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_memory_allocation);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_workSpace_tooSmall);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_dstSize_tooSmall);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_srcSize_wrong);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_dstBuffer_null);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_noForwardProgress_destFull);
+  NODE_DEFINE_CONSTANT(target, ZSTD_error_noForwardProgress_inputEmpty);
 }
 
 }  // namespace node
diff --git a/test/parallel/test-zlib-bytes-read.js b/test/parallel/test-zlib-bytes-read.js
index 605281cd3bd7e6..09b515cc7b70cf 100644
--- a/test/parallel/test-zlib-bytes-read.js
+++ b/test/parallel/test-zlib-bytes-read.js
@@ -33,6 +33,7 @@ for (const method of [
   ['createDeflate', 'createInflate', true],
   ['createDeflateRaw', 'createInflateRaw', true],
   ['createBrotliCompress', 'createBrotliDecompress', true],
+  ['createZstdCompress', 'createZstdDecompress', false],
 ]) {
   let compWriter;
   let compData = Buffer.alloc(0);
diff --git a/test/parallel/test-zlib-convenience-methods.js b/test/parallel/test-zlib-convenience-methods.js
index 01ec7e211bd5aa..f938a1f6a756ca 100644
--- a/test/parallel/test-zlib-convenience-methods.js
+++ b/test/parallel/test-zlib-convenience-methods.js
@@ -54,6 +54,8 @@ for (const [type, expect] of [
     ['deflateRaw', 'inflateRaw', 'DeflateRaw', 'InflateRaw'],
     ['brotliCompress', 'brotliDecompress',
      'BrotliCompress', 'BrotliDecompress'],
+    ['zstdCompress', 'zstdDecompress',
+     'ZstdCompress', 'ZstdDecompress'],
   ]) {
     zlib[method[0]](expect, opts, common.mustCall((err, result) => {
       zlib[method[1]](result, opts, common.mustCall((err, result) => {
diff --git a/test/parallel/test-zlib-empty-buffer.js b/test/parallel/test-zlib-empty-buffer.js
index 27fd1340fd1eb4..af53b3013ee82f 100644
--- a/test/parallel/test-zlib-empty-buffer.js
+++ b/test/parallel/test-zlib-empty-buffer.js
@@ -11,10 +11,12 @@ const emptyBuffer = Buffer.alloc(0);
     [ zlib.deflateSync, zlib.inflateSync, 'deflate sync' ],
     [ zlib.gzipSync, zlib.gunzipSync, 'gzip sync' ],
     [ zlib.brotliCompressSync, zlib.brotliDecompressSync, 'br sync' ],
+    [ zlib.zstdCompressSync, zlib.zstdDecompressSync, 'zstd sync' ],
     [ promisify(zlib.deflateRaw), promisify(zlib.inflateRaw), 'raw' ],
     [ promisify(zlib.deflate), promisify(zlib.inflate), 'deflate' ],
     [ promisify(zlib.gzip), promisify(zlib.gunzip), 'gzip' ],
     [ promisify(zlib.brotliCompress), promisify(zlib.brotliDecompress), 'br' ],
+    [ promisify(zlib.zstdCompress), promisify(zlib.zstdDecompress), 'zstd' ],
   ]) {
     const compressed = await compress(emptyBuffer);
     const decompressed = await decompress(compressed);
diff --git a/test/parallel/test-zlib-invalid-input.js b/test/parallel/test-zlib-invalid-input.js
index 7aa44dfe7090a1..7aea0efa06dbcf 100644
--- a/test/parallel/test-zlib-invalid-input.js
+++ b/test/parallel/test-zlib-invalid-input.js
@@ -40,6 +40,7 @@ const unzips = [
   zlib.Inflate(),
   zlib.InflateRaw(),
   zlib.BrotliDecompress(),
+  zlib.ZstdDecompress(),
 ];
 
 nonStringInputs.forEach(common.mustCall((input) => {
diff --git a/test/parallel/test-zlib-random-byte-pipes.js b/test/parallel/test-zlib-random-byte-pipes.js
index d8d039a6d65c4f..6a7d7c505e5c25 100644
--- a/test/parallel/test-zlib-random-byte-pipes.js
+++ b/test/parallel/test-zlib-random-byte-pipes.js
@@ -144,6 +144,7 @@ class HashStream extends Stream {
 for (const [ createCompress, createDecompress ] of [
   [ zlib.createGzip, zlib.createGunzip ],
   [ zlib.createBrotliCompress, zlib.createBrotliDecompress ],
+  [ zlib.createZstdCompress, zlib.createZstdDecompress ],
 ]) {
   const inp = new RandomReadStream({ total: 1024, block: 256, jitter: 16 });
   const out = new HashStream();
diff --git a/test/parallel/test-zlib-write-after-flush.js b/test/parallel/test-zlib-write-after-flush.js
index 6edcae2e2f18bf..57988191f84c57 100644
--- a/test/parallel/test-zlib-write-after-flush.js
+++ b/test/parallel/test-zlib-write-after-flush.js
@@ -27,6 +27,7 @@ const zlib = require('zlib');
 for (const [ createCompress, createDecompress ] of [
   [ zlib.createGzip, zlib.createGunzip ],
   [ zlib.createBrotliCompress, zlib.createBrotliDecompress ],
+  [ zlib.createZstdCompress, zlib.createZstdDecompress ],
 ]) {
   const gzip = createCompress();
   const gunz = createDecompress();
diff --git a/test/parallel/test-zlib-zero-byte.js b/test/parallel/test-zlib-zero-byte.js
index fc57960f1e56cb..6b3ecdcc0224e4 100644
--- a/test/parallel/test-zlib-zero-byte.js
+++ b/test/parallel/test-zlib-zero-byte.js
@@ -24,7 +24,13 @@ const common = require('../common');
 const assert = require('assert');
 const zlib = require('zlib');
 
-for (const Compressor of [ zlib.Gzip, zlib.BrotliCompress ]) {
+const compressors = [
+  [zlib.Gzip, 20],
+  [zlib.BrotliCompress, 1],
+  [zlib.ZstdCompress, 9],
+];
+
+for (const [Compressor, expected] of compressors) {
   const gz = Compressor();
   const emptyBuffer = Buffer.alloc(0);
   let received = 0;
@@ -33,7 +39,6 @@ for (const Compressor of [ zlib.Gzip, zlib.BrotliCompress ]) {
   });
 
   gz.on('end', common.mustCall(function() {
-    const expected = Compressor === zlib.Gzip ? 20 : 1;
     assert.strictEqual(received, expected,
                        `${received}, ${expected}, ${Compressor.name}`);
   }));
diff --git a/test/parallel/test-zlib.js b/test/parallel/test-zlib.js
index 65050b85a036cf..3b8878d915c097 100644
--- a/test/parallel/test-zlib.js
+++ b/test/parallel/test-zlib.js
@@ -42,6 +42,7 @@ let zlibPairs = [
   [zlib.Gzip, zlib.Unzip],
   [zlib.DeflateRaw, zlib.InflateRaw],
   [zlib.BrotliCompress, zlib.BrotliDecompress],
+  [zlib.ZstdCompress, zlib.ZstdDecompress],
 ];
 
 // How fast to trickle through the slowstream