diff --git a/.changeset/khaki-kangaroos-dress.md b/.changeset/khaki-kangaroos-dress.md
new file mode 100644
index 0000000000..579f8a8a40
--- /dev/null
+++ b/.changeset/khaki-kangaroos-dress.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Shiden chain.
diff --git a/src/chains/definitions/shiden.ts b/src/chains/definitions/shiden.ts
new file mode 100644
index 0000000000..cb809a1c64
--- /dev/null
+++ b/src/chains/definitions/shiden.ts
@@ -0,0 +1,24 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const shiden = /*#__PURE__*/ defineChain({
+  id: 336,
+  name: 'Shiden',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'SDN',
+    symbol: 'SDN',
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://shiden.public.blastapi.io'],
+      webSocket: ['wss://shiden-rpc.dwellir.com']
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Shiden Scan',
+      url: 'https://shiden.subscan.io',
+    },
+  },
+  testnet: false,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index f64111f805..184e5a6918 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -325,6 +325,7 @@ export { spicy } from './definitions/spicy.js'
 export { shardeumSphinx } from './definitions/shardeumSphinx.js'
 export { shibarium } from './definitions/shibarium.js'
 export { shibariumTestnet } from './definitions/shibariumTestnet.js'
+export { shiden } from './definitions/shiden.js'
 export { storyTestnet } from './definitions/storyTestnet.js'
 export { silicon } from './definitions/silicon.js'
 export { siliconSepolia } from './definitions/siliconSepolia.js'