diff --git a/ethereum/env/.env.mezo.mainnet b/ethereum/env/.env.mezo.mainnet
new file mode 100644
index 0000000000..e2f50502c3
--- /dev/null
+++ b/ethereum/env/.env.mezo.mainnet
@@ -0,0 +1,17 @@
+RPC_URL=https://jsonrpc-mezo.boar.network/
+FORGE_ARGS="--gas-price 324 --skip-simulation --resume"
+
+INIT_SIGNERS=["0x58CC3AE5C097b213cE3c81979e1B9f9570746AA5"]
+INIT_GOV_CHAIN_ID=0x1
+INIT_GOV_CONTRACT=0x0000000000000000000000000000000000000000000000000000000000000004
+INIT_CHAIN_ID=50
+INIT_EVM_CHAIN_ID=31612
+
+# Bridge Migrations
+BRIDGE_INIT_CHAIN_ID=50
+BRIDGE_INIT_GOV_CHAIN_ID=0x1
+BRIDGE_INIT_GOV_CONTRACT=0x0000000000000000000000000000000000000000000000000000000000000004
+
+# There is no WETH
+BRIDGE_INIT_WETH=0x0000000000000000000000000000000000000000
+BRIDGE_INIT_FINALITY=1
diff --git a/node/hack/repair_eth/repair_eth.go b/node/hack/repair_eth/repair_eth.go
index 79ae18d462..0b44e6403a 100644
--- a/node/hack/repair_eth/repair_eth.go
+++ b/node/hack/repair_eth/repair_eth.go
@@ -58,6 +58,7 @@ var etherscanAPIMap = map[vaa.ChainID]string{
 	vaa.ChainIDUnichain:   "https://api.uniscan.xyz/",
 	vaa.ChainIDWorldchain: "https://api.worldscan.org",
 	vaa.ChainIDInk:        "", // TODO: Does Ink have an etherscan API endpoint?
+	vaa.ChainIDMezo:       "", // TODO: only known block explorer API for Mezo uses blockscout
 }
 
 var (
diff --git a/node/pkg/governor/mainnet_chains.go b/node/pkg/governor/mainnet_chains.go
index 9fc47adc37..72939eec82 100644
--- a/node/pkg/governor/mainnet_chains.go
+++ b/node/pkg/governor/mainnet_chains.go
@@ -46,5 +46,6 @@ func chainList() []chainConfigEntry {
 		{emitterChainID: vaa.ChainIDUnichain, dailyLimit: 500_000, bigTransactionSize: 50_000},
 		{emitterChainID: vaa.ChainIDWorldchain, dailyLimit: 500_000, bigTransactionSize: 50_000},
 		{emitterChainID: vaa.ChainIDInk, dailyLimit: 500_000, bigTransactionSize: 50_000},
+		{emitterChainID: vaa.ChainIDMezo, dailyLimit: 500_000, bigTransactionSize: 50_000},
 	}
 }
diff --git a/node/pkg/governor/mainnet_tokens_test.go b/node/pkg/governor/mainnet_tokens_test.go
index 64b0710031..5ef0d92cc5 100644
--- a/node/pkg/governor/mainnet_tokens_test.go
+++ b/node/pkg/governor/mainnet_tokens_test.go
@@ -48,6 +48,8 @@ func TestGovernedChainHasGovernedAssets(t *testing.T) {
 		vaa.ChainIDInk: true,
 		// TODO: Remove this once we have governed tokens for SeiEVM.
 		vaa.ChainIDSeiEVM: true,
+		// TODO: Remove this once we have governed tokens for Mezo.
+		vaa.ChainIDMezo: true,
 	}
 	if len(ignoredChains) > 0 {
 		ignoredOutput := []string{}
diff --git a/node/pkg/watchers/evm/chain_config.go b/node/pkg/watchers/evm/chain_config.go
index 1e47527b56..e6f4923e01 100644
--- a/node/pkg/watchers/evm/chain_config.go
+++ b/node/pkg/watchers/evm/chain_config.go
@@ -99,7 +99,7 @@ var (
 		vaa.ChainIDInk:        {Finalized: true, Safe: true, EvmChainID: 57073, PublicRPC: "https://rpc-qnd.inkonchain.com", ContractAddr: "0xCa1D5a146B03f6303baF59e5AD5615ae0b9d146D"},
 		// vaa.ChainIDHyperEVM:   Not in Mainnet yet.
 		// vaa.ChainIDMonad:      Not in Mainnet yet.
-		// vaa.ChainIDMezo:       Not in Mainnet yet.
+		vaa.ChainIDMezo: {Finalized: true, Safe: true, EvmChainID: 31612, PublicRPC: "https://jsonrpc-mezo.boar.network/", ContractAddr: "0xaBf89de706B583424328B54dD05a8fC986750Da8"},
 	}
 
 	// testnetChainConfig specifies the configuration for all chains enabled in Testnet.
diff --git a/sdk/mainnet_consts.go b/sdk/mainnet_consts.go
index 7a135ed147..21e60efbc3 100644
--- a/sdk/mainnet_consts.go
+++ b/sdk/mainnet_consts.go
@@ -130,6 +130,7 @@ var knownTokenbridgeEmitters = map[vaa.ChainID]string{
 	vaa.ChainIDWormchain:  "aeb534c45c3049d380b9d9b966f9895f53abd4301bfaff407fa09dea8ae7a924",
 	vaa.ChainIDWorldchain: "000000000000000000000000c309275443519adca74c9136b02A38eF96E3a1f6",
 	vaa.ChainIDInk:        "0000000000000000000000003Ff72741fd67D6AD0668d93B41a09248F4700560",
+	vaa.ChainIDMezo:       "000000000000000000000000F97B81E513f53c7a6B57Bd0b103a6c295b3096C5",
 }
 
 // KnownNFTBridgeEmitters is a list of well-known mainnet emitters for the NFT bridge.