diff --git a/.changeset/shy-lobsters-vanish.md b/.changeset/shy-lobsters-vanish.md
new file mode 100644
index 0000000000..0a24996cee
--- /dev/null
+++ b/.changeset/shy-lobsters-vanish.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Planq Mainnet.
diff --git a/src/chains/definitions/planq.ts b/src/chains/definitions/planq.ts
new file mode 100644
index 0000000000..d55500333f
--- /dev/null
+++ b/src/chains/definitions/planq.ts
@@ -0,0 +1,21 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const planq = /*#__PURE__*/ defineChain({
+  id: 7070,
+  name: 'Planq Mainnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'PLQ',
+    symbol: 'PLQ',
+  },
+  rpcUrls: {
+    default: { http: ['https://evm-rpc.planq.network'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Planq Explorer',
+      url: 'https://evm.planq.network',
+    },
+  },
+  testnet: false,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index c3dc9ca87d..6ad987c0ff 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -299,6 +299,7 @@ export { palmTestnet } from './definitions/palmTestnet.js'
 export { pgn } from './definitions/pgn.js'
 export { pgnTestnet } from './definitions/pgnTestnet.js'
 export { phoenix } from './definitions/phoenix.js'
+export { planq } from './definitions/planq.js'
 export { playfiAlbireo } from './definitions/playfiAlbireo.js'
 export { plinga } from './definitions/plinga.js'
 export { plumeTestnet } from './definitions/plumeTestnet.js'