diff --git a/.changeset/sixty-bananas-add.md b/.changeset/sixty-bananas-add.md
new file mode 100644
index 0000000000..9c36ada463
--- /dev/null
+++ b/.changeset/sixty-bananas-add.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Electroneum chain.
diff --git a/src/chains/definitions/electroneum.ts b/src/chains/definitions/electroneum.ts
new file mode 100644
index 0000000000..7965f158d0
--- /dev/null
+++ b/src/chains/definitions/electroneum.ts
@@ -0,0 +1,23 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const electroneum = /*#__PURE__*/ defineChain({
+  id: 52014,
+  name: 'Electroneum Mainnet',
+  nativeCurrency: {
+    name: 'ETN',
+    symbol: 'ETN',
+    decimals: 18,
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://rpc.electroneum.com'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Electroneum Block Explorer',
+      url: 'https://blockexplorer.electroneum.com',
+    },
+  },
+  testnet: false,
+})
diff --git a/src/chains/definitions/electroneumTestnet.ts b/src/chains/definitions/electroneumTestnet.ts
new file mode 100644
index 0000000000..523cd3aea2
--- /dev/null
+++ b/src/chains/definitions/electroneumTestnet.ts
@@ -0,0 +1,23 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const electroneumTestnet = /*#__PURE__*/ defineChain({
+  id: 5201420,
+  name: 'Electroneum Testnet',
+  nativeCurrency: {
+    name: 'ETN',
+    symbol: 'ETN',
+    decimals: 18,
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://testnet-rpc.electroneum.com'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Electroneum Block Explorer',
+      url: 'https://blockexplorer.thesecurityteam.rocks',
+    },
+  },
+  testnet: true,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index feb1bf0497..499e0045da 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -110,6 +110,8 @@ export { evmos } from './definitions/evmos.js'
 export { evmosTestnet } from './definitions/evmosTestnet.js'
 export { ekta } from './definitions/ekta.js'
 export { ektaTestnet } from './definitions/ektaTestnet.js'
+export { electroneum } from './definitions/electroneum.js'
+export { electroneumTestnet } from './definitions/electroneumTestnet.js'
 export { fantom } from './definitions/fantom.js'
 export { fantomSonicTestnet } from './definitions/fantomSonicTestnet.js'
 export { fantomTestnet } from './definitions/fantomTestnet.js'