diff --git a/src/evmUtils/evmClients.ts b/src/evmUtils/evmClients.ts
index 6d844ac..af2d783 100644
--- a/src/evmUtils/evmClients.ts
+++ b/src/evmUtils/evmClients.ts
@@ -2,6 +2,7 @@ import { Client, createClient, fallback, http } from "viem"
 import {
   arbitrum,
   aurora,
+  avalanche,
   base,
   bob,
   bsc,
@@ -14,6 +15,8 @@ import {
   mode,
   sepolia,
 } from "viem/chains"
+import { entries } from "../utils/objectHelper"
+import { KnownChainId } from "../utils/types/knownIds"
 import {
   ailayer,
   berachainTestnet,
@@ -24,8 +27,6 @@ import {
   lorenzo,
   xLayer,
 } from "./evmChainInfos"
-import { KnownChainId } from "../utils/types/knownIds"
-import { entries } from "../utils/objectHelper"
 
 type EVMChain = KnownChainId.EVMChain
 const EVMChain = KnownChainId.EVM
@@ -153,6 +154,12 @@ export const defaultEvmClients: Partial<Record<KnownChainId.EVMChain, Client>> =
       transport: http(),
       batch: { multicall: true },
     }),
+
+    [EVMChain.Avalanche]: createClient({
+      chain: avalanche,
+      transport: http(),
+      batch: { multicall: true },
+    }),
   } satisfies Record<Exclude<EVMChain, typeof EVMChain.BitboyTestnet>, Client>
 
 export const evmChainIdFromKnownChainId = (
diff --git a/src/stacksUtils/crossContractDataMapping.ts b/src/stacksUtils/crossContractDataMapping.ts
index 259d68e..69ad35d 100644
--- a/src/stacksUtils/crossContractDataMapping.ts
+++ b/src/stacksUtils/crossContractDataMapping.ts
@@ -56,6 +56,8 @@ export function contractAssignedChainIdFromKnownChain(
       return 15n
     case KnownChainId.EVM.Base:
       return 16n
+    case KnownChainId.EVM.Avalanche:
+      return 17n
     case KnownChainId.BRC20.Mainnet:
     case KnownChainId.BRC20.Testnet:
       return 1001n
@@ -166,6 +168,11 @@ export function contractAssignedChainIdToKnownChain(
   }
   assertExclude(resPossibilities, KnownChainId.EVM.Base)
 
+  if (chainId === 17n) {
+    return [KnownChainId.EVM.Avalanche]
+  }
+  assertExclude(resPossibilities, KnownChainId.EVM.Avalanche)
+
   if (chainId === 1001n) {
     return [KnownChainId.BRC20.Mainnet, KnownChainId.BRC20.Testnet]
   }
diff --git a/src/utils/swapHelpers/evmDexAggregatorSwapParametersHelpers.ts b/src/utils/swapHelpers/evmDexAggregatorSwapParametersHelpers.ts
index 8420398..43c9cf5 100644
--- a/src/utils/swapHelpers/evmDexAggregatorSwapParametersHelpers.ts
+++ b/src/utils/swapHelpers/evmDexAggregatorSwapParametersHelpers.ts
@@ -30,6 +30,7 @@ export const possibleSwapOnEVMChains = [
   KnownChainId.EVM.Arbitrum,
   KnownChainId.EVM.Linea,
   KnownChainId.EVM.BSC,
+  KnownChainId.EVM.Avalanche,
 ] satisfies KnownChainId.EVMChain[]
 
 export interface EVMDexAggregatorSwapParameters {
diff --git a/src/utils/swapHelpers/fetchDexAggregatorPossibleRoutes/fetchKyberSwapPossibleRoutes.ts b/src/utils/swapHelpers/fetchDexAggregatorPossibleRoutes/fetchKyberSwapPossibleRoutes.ts
index 2c95972..5d1be3a 100644
--- a/src/utils/swapHelpers/fetchDexAggregatorPossibleRoutes/fetchKyberSwapPossibleRoutes.ts
+++ b/src/utils/swapHelpers/fetchDexAggregatorPossibleRoutes/fetchKyberSwapPossibleRoutes.ts
@@ -183,6 +183,8 @@ function mapSDKChainIdToKyberChainId(
       return "base"
     case KnownChainId.EVM.Linea:
       return "linea"
+    case KnownChainId.EVM.Avalanche:
+      return "avalanche"
     case KnownChainId.EVM.Sepolia:
     case KnownChainId.EVM.BSCTestnet:
     case KnownChainId.EVM.CoreDAOTestnet:
diff --git a/src/utils/types/knownIds.ts b/src/utils/types/knownIds.ts
index 82ea42b..2f9b3cf 100644
--- a/src/utils/types/knownIds.ts
+++ b/src/utils/types/knownIds.ts
@@ -348,6 +348,12 @@ export namespace KnownChainId {
     // export const Bera = chainId("evm-bera")
     /** Represents the Bera testnet chain ID. */
     export const BeraTestnet = chainId("evm-bera-testnet")
+
+    // Avalanche
+    /** Represents the Avalanche mainnet chain ID. */
+    export const Avalanche = chainId("evm-avalanche")
+    /** Represents the Avalanche testnet chain ID. */
+    // export const AvalancheTestnet = chainId("evm-avalanche-testnet")
   }
   /** Represents a mainnet EVM-compatible blockchain network. */
   export type EVMMainnetChain = (typeof _allKnownEVMMainnetChains)[number]
@@ -422,6 +428,7 @@ export const _allKnownEVMMainnetChains = [
   KnownChainId.EVM.Manta,
   KnownChainId.EVM.Linea,
   KnownChainId.EVM.Base,
+  KnownChainId.EVM.Avalanche,
 ] as const
 export const _allKnownEVMTestnetChains = [
   KnownChainId.EVM.Sepolia,