diff --git a/.changeset/afraid-rats-open.md b/.changeset/afraid-rats-open.md
new file mode 100644
index 00000000000..af5aaba61df
--- /dev/null
+++ b/.changeset/afraid-rats-open.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+add core chains
diff --git a/packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts b/packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts
new file mode 100644
index 00000000000..c4a06c58ddb
--- /dev/null
+++ b/packages/thirdweb/src/chains/chain-definitions/core-mainnet.ts
@@ -0,0 +1,20 @@
+import { defineChain } from "../utils.js";
+
+/**
+ * @chain
+ */
+export const coreMainnet = /* @__PURE__ */ defineChain({
+  blockExplorers: [
+    {
+      name: "Core Scan",
+      url: "https://scan.coredao.org/",
+    },
+  ],
+  id: 1116,
+  name: "Core",
+  nativeCurrency: {
+    decimals: 18,
+    name: "Ether",
+    symbol: "ETH",
+  },
+});
diff --git a/packages/thirdweb/src/chains/chain-definitions/core-testnet.ts b/packages/thirdweb/src/chains/chain-definitions/core-testnet.ts
new file mode 100644
index 00000000000..4fda5e1d671
--- /dev/null
+++ b/packages/thirdweb/src/chains/chain-definitions/core-testnet.ts
@@ -0,0 +1,21 @@
+import { defineChain } from "../utils.js";
+
+/**
+ * @chain
+ */
+export const coreTestnet = /* @__PURE__ */ defineChain({
+  blockExplorers: [
+    {
+      name: "Core Testnet Scan",
+      url: "https://scan.test2.btcs.network/",
+    },
+  ],
+  id: 1114,
+  name: "Core Testnet",
+  nativeCurrency: {
+    decimals: 18,
+    name: "Ether",
+    symbol: "ETH",
+  },
+  testnet: true,
+});
diff --git a/packages/thirdweb/src/exports/chains.ts b/packages/thirdweb/src/exports/chains.ts
index 4ff5fcb0ea2..c6f80aeb863 100644
--- a/packages/thirdweb/src/exports/chains.ts
+++ b/packages/thirdweb/src/exports/chains.ts
@@ -24,6 +24,8 @@ export { bsc } from "../chains/chain-definitions/bsc.js";
 export { bscTestnet } from "../chains/chain-definitions/bsc-testnet.js";
 export { celo } from "../chains/chain-definitions/celo.js";
 export { celoAlfajoresTestnet } from "../chains/chain-definitions/celo-alfajores-testnet.js";
+export { coreMainnet } from "../chains/chain-definitions/core-mainnet.js";
+export { coreTestnet } from "../chains/chain-definitions/core-testnet.js";
 export { cronos } from "../chains/chain-definitions/cronos.js";
 export { degen } from "../chains/chain-definitions/degen.js";
 // mainnet = alias for ethereum