diff --git a/doc/01-hash.md b/doc/01-hash.md
index 113131b..f5f0faa 100644
--- a/doc/01-hash.md
+++ b/doc/01-hash.md
@@ -4,21 +4,21 @@ All hash algorithms are located in the `buddy.core.hash` namespace.
 
 Available hash algorithms:
 
-| Hash algorithm name | Digest size |
-| --- |---|
-| SHA1      | 160 | 
-| SHA2      | 256, 384, 512 |
-| SHA3      | 256, 384, 512 |
-| MD5       | 128 |
-| Tiger     | 192 |
-| Blake2b   | 512 |
-| Skein     | 256, 512, 1024, arbitrary size |
-| Whirlpool | 512 |
-| RIPEMD128 | 128 |
-| RIPEMD160 | 160 |
-| RIPEMD256 | 256 |
-| RIPEMD320 | 320 |
-
+| Hash algorithm name | Digest size                    |
+|---------------------|--------------------------------|
+| SHA1                | 160                            | 
+| SHA2                | 256, 384, 512                  |
+| SHA3                | 256, 384, 512                  |
+| MD5                 | 128                            |
+| Tiger               | 192                            |
+| BLAKE2b             | 128, 256, 512                  |
+| BLAKE3              | 256, arbitrary size            |
+| Skein               | 256, 512, 1024, arbitrary size |
+| Whirlpool           | 512                            |
+| RIPEMD128           | 128                            |
+| RIPEMD160           | 160                            |
+| RIPEMD256           | 256                            |
+| RIPEMD320           | 320                            |
 
 ## Basic usage
 
diff --git a/src/buddy/core/hash.clj b/src/buddy/core/hash.clj
index a01c67c..13ee8e2 100644
--- a/src/buddy/core/hash.clj
+++ b/src/buddy/core/hash.clj
@@ -32,31 +32,33 @@
    org.bouncycastle.crypto.digests.SHA384Digest
    org.bouncycastle.crypto.digests.SHA512Digest
    org.bouncycastle.crypto.digests.Blake2bDigest
+   org.bouncycastle.crypto.digests.Blake3Digest
    org.bouncycastle.crypto.digests.SkeinDigest
    org.bouncycastle.crypto.digests.WhirlpoolDigest))
 
 (def ^:no-doc ^:static
   +digest-engines+
-  {:sha256   #(SHA256Digest.)
-   :sha384   #(SHA384Digest.)
-   :sha512   #(SHA512Digest.)
-   :sha1     #(SHA1Digest.)
-   :ripemd128 #(RIPEMD128Digest.)
-   :ripemd160 #(RIPEMD160Digest.)
-   :ripemd256 #(RIPEMD256Digest.)
-   :ripemd320 #(RIPEMD320Digest.)
-   :tiger    #(TigerDigest.)
-   :md5      #(MD5Digest.)
-   :sha3-256 #(SHA3Digest. 256)
-   :sha3-384 #(SHA3Digest. 384)
-   :sha3-512 #(SHA3Digest. 512)
+  {:sha256      #(SHA256Digest.)
+   :sha384      #(SHA384Digest.)
+   :sha512      #(SHA512Digest.)
+   :sha1        #(SHA1Digest.)
+   :ripemd128   #(RIPEMD128Digest.)
+   :ripemd160   #(RIPEMD160Digest.)
+   :ripemd256   #(RIPEMD256Digest.)
+   :ripemd320   #(RIPEMD320Digest.)
+   :tiger       #(TigerDigest.)
+   :md5         #(MD5Digest.)
+   :sha3-256    #(SHA3Digest. 256)
+   :sha3-384    #(SHA3Digest. 384)
+   :sha3-512    #(SHA3Digest. 512)
    :blake2b-128 #(Blake2bDigest. nil 16 nil nil)
    :blake2b-256 #(Blake2bDigest. nil 32 nil nil)
    :blake2b-512 #(Blake2bDigest. nil 64 nil nil)
-   :skein-256 #(SkeinDigest. 256 256)
-   :skein-512 #(SkeinDigest. 512 512)
-   :skein-1024 #(SkeinDigest. 1024 1024)
-   :whirlpool #(WhirlpoolDigest.)})
+   :blake3-256  #(Blake3Digest. 256)
+   :skein-256   #(SkeinDigest. 256 256)
+   :skein-512   #(SkeinDigest. 512 512)
+   :skein-1024  #(SkeinDigest. 1024 1024)
+   :whirlpool   #(WhirlpoolDigest.)})
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Protocol definitions (abstractions)
@@ -196,6 +198,20 @@
   [input]
   (digest input :blake2b-512))
 
+(defn blake3
+  "BLAKE3 is a cryptographic hash function faster than MD5,
+  SHA-1, SHA-2, SHA-3, and BLAKE2. It focuses on speed."
+  [input length]
+  (let [length (* length 8)
+        engine (Blake3Digest. ^int length)]
+    (-digest input engine)))
+
+(defn blake3-256
+  "BLAKE3 cryptographic hash function with fixed output
+  digest size to 256 bits."
+  [input]
+  (digest input :blake3-256))
+
 (defn skein
   "Skein is a cryptographic hash function based on
   Threefish tweakable block cipher compressed using
diff --git a/test/buddy/core/hash_tests.clj b/test/buddy/core/hash_tests.clj
index 6b33892..d0a15ab 100644
--- a/test/buddy/core/hash_tests.clj
+++ b/test/buddy/core/hash_tests.clj
@@ -76,6 +76,13 @@
                   "D25E1031AFEE585313896444934EB04B"
                   "903A685B1448B755D56F701AFE9BE2CE")))))
 
+  (testing "blake3 256"
+    (let [hashed1 (hash/blake3-256 "")
+          hashed2 (hash/digest "" :blake3-256)]
+      (is (bytes/equals? hashed1 hashed2))
+      (is (= (bytes->hex hashed1)
+             "af1349b9f5f9a1a6a0404dea36dcc9499bcb25c9adc112b7cc9a93cae41f3262"))))
+
   (testing "skein 256"
     (let [hashed1 (hash/skein-256 "")
           hashed2 (hash/skein "" 32)