diff --git a/.changeset/fresh-words-learn.md b/.changeset/fresh-words-learn.md
new file mode 100644
index 00000000000..8a5d3c186c3
--- /dev/null
+++ b/.changeset/fresh-words-learn.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Add Somnia Testnet
diff --git a/packages/thirdweb/src/chains/chain-definitions/somniaTestnet.ts b/packages/thirdweb/src/chains/chain-definitions/somniaTestnet.ts
new file mode 100644
index 00000000000..d3b6c09e076
--- /dev/null
+++ b/packages/thirdweb/src/chains/chain-definitions/somniaTestnet.ts
@@ -0,0 +1,18 @@
+import { defineChain } from "../utils.js";
+
+/**
+ * @chain
+ */
+export const somniaTestnet = /*@__PURE__*/ defineChain({
+  blockExplorers: [
+    {
+      apiUrl: "https://shannon-explorer.somnia.network/api",
+      name: "Somnia Testnet Explorer",
+      url: "https://shannon-explorer.somnia.network/",
+    },
+  ],
+  id: 50312,
+  name: "Somnia Testnet",
+  nativeCurrency: { decimals: 18, name: "Somnia Testnet Token", symbol: "STT" },
+  testnet: true,
+});
diff --git a/packages/thirdweb/src/exports/chains.ts b/packages/thirdweb/src/exports/chains.ts
index 8a73ef5962b..4ff5fcb0ea2 100644
--- a/packages/thirdweb/src/exports/chains.ts
+++ b/packages/thirdweb/src/exports/chains.ts
@@ -68,6 +68,7 @@ export { scroll } from "../chains/chain-definitions/scroll.js";
 export { scrollAlphaTestnet } from "../chains/chain-definitions/scroll-alpha-testnet.js";
 export { scrollSepoliaTestnet } from "../chains/chain-definitions/scroll-sepolia-testnet.js";
 export { sepolia } from "../chains/chain-definitions/sepolia.js";
+export { somniaTestnet } from "../chains/chain-definitions/somniaTestnet.js";
 export { soneiumMinato } from "../chains/chain-definitions/soneium-minato.js";
 export { treasure } from "../chains/chain-definitions/treasure.js";
 export { treasureTopaz } from "../chains/chain-definitions/treasureTopaz.js";
@@ -78,6 +79,7 @@ export { zkSync } from "../chains/chain-definitions/zksync.js";
 export { zkSyncSepolia } from "../chains/chain-definitions/zksync-sepolia.js";
 export { zora } from "../chains/chain-definitions/zora.js";
 export { zoraSepolia } from "../chains/chain-definitions/zora-sepolia.js";
+
 export type { Chain, ChainMetadata, ChainOptions } from "../chains/types.js";
 // define chain, chainMetadata
 export {