diff --git a/.changeset/hot-beans-admire.md b/.changeset/hot-beans-admire.md
new file mode 100644
index 0000000000..1ec83ac992
--- /dev/null
+++ b/.changeset/hot-beans-admire.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Excelon Mainnet chain.
diff --git a/src/chains/definitions/excelonMainnet.ts b/src/chains/definitions/excelonMainnet.ts
new file mode 100644
index 0000000000..3adfa7149d
--- /dev/null
+++ b/src/chains/definitions/excelonMainnet.ts
@@ -0,0 +1,23 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const excelonMainnet = /*#__PURE__*/ defineChain({
+  id: 22052002,
+  name: 'Excelon Mainnet',
+  network: 'XLON',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'Excelon',
+    symbol: 'xlon',
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://edgewallet1.xlon.org'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Excelon explorer',
+      url: 'https://explorer.excelon.io',
+    },
+  },
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index 7d949d582a..58be9dcbe9 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -119,6 +119,7 @@ export { elastos } from './definitions/elastos.js'
 export { elastosTestnet } from './definitions/elastosTestnet.js'
 export { electroneum } from './definitions/electroneum.js'
 export { electroneumTestnet } from './definitions/electroneumTestnet.js'
+export { excelonMainnet } from './definitions/excelonMainnet.js'
 export { fantom } from './definitions/fantom.js'
 export { fantomSonicTestnet } from './definitions/fantomSonicTestnet.js'
 export { fantomTestnet } from './definitions/fantomTestnet.js'