diff --git a/.changeset/fuzzy-games-film.md b/.changeset/fuzzy-games-film.md
new file mode 100644
index 0000000000..8d6b40c9b3
--- /dev/null
+++ b/.changeset/fuzzy-games-film.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Orderly chain.
diff --git a/src/chains/definitions/orderly.ts b/src/chains/definitions/orderly.ts
new file mode 100644
index 0000000000..9f7cc759aa
--- /dev/null
+++ b/src/chains/definitions/orderly.ts
@@ -0,0 +1,17 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const orderly = /*#__PURE__*/ defineChain({
+  id: 291,
+  name: 'Orderly',
+  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: { http: ['https://rpc.orderly.network'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Orderly Explorer',
+      url: 'https://explorer.orderly.network',
+    },
+  },
+  testnet: false,
+})
diff --git a/src/chains/definitions/orderlySepolia.ts b/src/chains/definitions/orderlySepolia.ts
new file mode 100644
index 0000000000..bff938debb
--- /dev/null
+++ b/src/chains/definitions/orderlySepolia.ts
@@ -0,0 +1,19 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const orderlySepolia = /*#__PURE__*/ defineChain({
+  id: 4460,
+  name: 'Orderly Sepolia',
+  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://l2-orderly-l2-4460-sepolia-8tc3sd7dvy.t.conduit.xyz'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Orderly Explorer',
+      url: 'https://explorerl2new-orderly-l2-4460-sepolia-8tc3sd7dvy.t.conduit.xyz',
+    },
+  },
+  testnet: true,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index d2bb1be43d..4560d09dd2 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -221,6 +221,8 @@ export { optimismSepolia } from './definitions/optimismSepolia.js'
 export { opBNB } from './definitions/opBNB.js'
 export { opBNBTestnet } from './definitions/opBNBTestnet.js'
 export { oortMainnetDev } from './definitions/oortmainnetDev.js'
+export { orderly } from './definitions/orderly.js'
+export { orderlySepolia } from './definitions/orderlySepolia.js'
 export { otimDevnet } from './definitions/otimDevnet.js'
 export { palm } from './definitions/palm.js'
 export { palmTestnet } from './definitions/palmTestnet.js'