diff --git a/.changeset/young-tips-mix.md b/.changeset/young-tips-mix.md
new file mode 100644
index 0000000000..c3b51c664c
--- /dev/null
+++ b/.changeset/young-tips-mix.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added SwissDLT Mainnet.
diff --git a/src/chains/definitions/swissdlt.ts b/src/chains/definitions/swissdlt.ts
new file mode 100644
index 0000000000..e63fd9d5c2
--- /dev/null
+++ b/src/chains/definitions/swissdlt.ts
@@ -0,0 +1,23 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const swissdlt = /*#__PURE__*/ defineChain({
+  id: 94,
+  name: 'SwissDLT Mainnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'BCTS',
+    symbol: 'BCTS',
+  },
+  rpcUrls: {
+    default: { 
+      http: ['https://rpc.swissdlt.ch'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'SwissDLT Explorer',
+      url: 'https://explorer.swissdlt.ch',
+    },
+  },
+  testnet: false,
+})
diff --git a/src/chains/index.ts b/src/chains/index.ts
index af1e1663f3..9bd45718e7 100644
--- a/src/chains/index.ts
+++ b/src/chains/index.ts
@@ -389,6 +389,7 @@ export { superposition } from './definitions/superposition.js'
 export { swan } from './definitions/swan.js'
 export { swanProximaTestnet } from './definitions/swanProximaTestnet.js'
 export { swanSaturnTestnet } from './definitions/swanSaturnTestnet.js'
+export { swissdlt } from './definitions/swissdlt.js'
 export { syscoin } from './definitions/syscoin.js'
 export { syscoinTestnet } from './definitions/syscoinTestnet.js'
 export { taiko } from './definitions/taiko.js'