diff --git a/README.md b/README.md
index a87c5c0c7fb..bba0a54920f 100644
--- a/README.md
+++ b/README.md
@@ -615,6 +615,7 @@ linkStyle default opacity:0.5
   wallet --> controller_utils;
   wallet --> keyring_controller;
   wallet --> messenger;
+  wallet --> network_controller;
   wallet --> remote_feature_flag_controller;
   wallet --> storage_service;
   wallet_cli --> base_controller;
diff --git a/packages/wallet/CHANGELOG.md b/packages/wallet/CHANGELOG.md
index 395e3257b50..9484da9860b 100644
--- a/packages/wallet/CHANGELOG.md
+++ b/packages/wallet/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- **BREAKING:** Add `NetworkController` initialization ([#9001](https://github.com/MetaMask/core/pull/9001))
+  - Passing `instanceOptions.networkController.infuraProjectId` is now required.
+- Add the `Wallet.init` function which calls `init` on required instances ([#9001](https://github.com/MetaMask/core/pull/9001))
+
 ### Changed
 
 - Bump `@metamask/accounts-controller` from `^39.0.2` to `^39.0.3` ([#9231](https://github.com/MetaMask/core/pull/9231))
diff --git a/packages/wallet/package.json b/packages/wallet/package.json
index a60081b716b..f2a5d4d87e4 100644
--- a/packages/wallet/package.json
+++ b/packages/wallet/package.json
@@ -61,6 +61,7 @@
     "@metamask/controller-utils": "^12.3.0",
     "@metamask/keyring-controller": "^27.1.0",
     "@metamask/messenger": "^1.2.0",
+    "@metamask/network-controller": "^33.0.0",
     "@metamask/remote-feature-flag-controller": "^4.2.2",
     "@metamask/scure-bip39": "^2.1.1",
     "@metamask/storage-service": "^1.0.2",
diff --git a/packages/wallet/src/Wallet.test.ts b/packages/wallet/src/Wallet.test.ts
index a89602c3fcc..2cc683da6b8 100644
--- a/packages/wallet/src/Wallet.test.ts
+++ b/packages/wallet/src/Wallet.test.ts
@@ -28,6 +28,9 @@ async function setupWallet(): Promise<Wallet> {
       connectivityController: {
         connectivityAdapter: new AlwaysOnlineAdapter(),
       },
+      networkController: {
+        infuraProjectId: 'fake-infura-project-id',
+      },
       storageService: {
         storage: new InMemoryStorageAdapter(),
       },
@@ -88,6 +91,9 @@ describe('Wallet', () => {
         keyringController: {
           encryptor: new MockEncryptor(),
         },
+        networkController: {
+          infuraProjectId: 'fake-infura-project-id',
+        },
         storageService: {
           storage: new InMemoryStorageAdapter(),
         },
@@ -134,6 +140,9 @@ describe('Wallet', () => {
         connectivityController: {
           connectivityAdapter: new AlwaysOnlineAdapter(),
         },
+        networkController: {
+          infuraProjectId: 'fake-infura-project-id',
+        },
         storageService: {
           storage: new InMemoryStorageAdapter(),
         },
@@ -174,6 +183,9 @@ describe('Wallet', () => {
         connectivityController: {
           connectivityAdapter: new AlwaysOnlineAdapter(),
         },
+        networkController: {
+          infuraProjectId: 'fake-infura-project-id',
+        },
         storageService: {
           storage: new InMemoryStorageAdapter(),
         },
@@ -187,6 +199,14 @@ describe('Wallet', () => {
     expect(Object.keys(wallet.state)).toStrictEqual(['WithMeta', 'NoMeta']);
   });
 
+  it('calls init on all instances and returns the results', async () => {
+    const wallet = await setupWallet();
+
+    const results = await wallet.init();
+
+    expect(results).toHaveLength(2);
+  });
+
   it('disallows modifying the messenger', async () => {
     const wallet = await setupWallet();
 
@@ -249,6 +269,9 @@ describe('Wallet', () => {
           connectivityController: {
             connectivityAdapter: new AlwaysOnlineAdapter(),
           },
+          networkController: {
+            infuraProjectId: 'fake-infura-project-id',
+          },
           storageService: {
             storage: new InMemoryStorageAdapter(),
           },
@@ -286,6 +309,9 @@ describe('Wallet', () => {
           connectivityController: {
             connectivityAdapter: new AlwaysOnlineAdapter(),
           },
+          networkController: {
+            infuraProjectId: 'fake-infura-project-id',
+          },
           storageService: {
             storage: new InMemoryStorageAdapter(),
           },
@@ -361,6 +387,9 @@ describe('Wallet', () => {
           connectivityController: {
             connectivityAdapter: new AlwaysOnlineAdapter(),
           },
+          networkController: {
+            infuraProjectId: 'fake-infura-project-id',
+          },
           keyringController: { encryptor: new MockEncryptor() },
           storageService: { storage: new InMemoryStorageAdapter() },
           remoteFeatureFlagController: {
diff --git a/packages/wallet/src/Wallet.ts b/packages/wallet/src/Wallet.ts
index 5ba1566599d..01c945570e5 100644
--- a/packages/wallet/src/Wallet.ts
+++ b/packages/wallet/src/Wallet.ts
@@ -123,6 +123,24 @@ export class Wallet {
     return this.#instances[name as keyof DefaultInstances];
   }
 
+  /**
+   * Complete additional initialization of instantiated controllers or services after instantiating `Wallet`.
+   *
+   * @returns The results of all initialization calls.
+   */
+  init(): Promise<PromiseSettledResult<unknown>[]> {
+    return Promise.allSettled(
+      Object.values(this.#instances)
+        .filter(
+          (instance): instance is Extract<typeof instance, { init: unknown }> =>
+            // We do actually want to check the prototype here.
+            // eslint-disable-next-line no-restricted-syntax
+            'init' in instance && typeof instance.init === 'function',
+        )
+        .map(async (instance) => instance.init()),
+    );
+  }
+
   /**
    * Destroy the wallet instance.
    */
diff --git a/packages/wallet/src/initialization/instances/index.ts b/packages/wallet/src/initialization/instances/index.ts
index bed6e52b26d..03fab5e5d5b 100644
--- a/packages/wallet/src/initialization/instances/index.ts
+++ b/packages/wallet/src/initialization/instances/index.ts
@@ -2,5 +2,6 @@ export { accountsController } from './accounts-controller/accounts-controller';
 export { approvalController } from './approval-controller/approval-controller';
 export { connectivityController } from './connectivity-controller/connectivity-controller';
 export { keyringController } from './keyring-controller/keyring-controller';
+export { networkController } from './network-controller/network-controller';
 export { remoteFeatureFlagController } from './remote-feature-flag-controller/remote-feature-flag-controller';
 export { storageService } from './storage-service/storage-service';
diff --git a/packages/wallet/src/initialization/instances/network-controller/network-controller.ts b/packages/wallet/src/initialization/instances/network-controller/network-controller.ts
new file mode 100644
index 00000000000..f48f37fed3f
--- /dev/null
+++ b/packages/wallet/src/initialization/instances/network-controller/network-controller.ts
@@ -0,0 +1,43 @@
+import { Messenger } from '@metamask/messenger';
+import {
+  NetworkController,
+  NetworkControllerMessenger,
+} from '@metamask/network-controller';
+
+import { InitializationConfiguration } from '../../types';
+
+export const networkController: InitializationConfiguration<
+  NetworkController,
+  NetworkControllerMessenger
+> = {
+  name: 'NetworkController',
+  init: ({ state, messenger, options }) =>
+    new NetworkController({
+      state,
+      messenger,
+      infuraProjectId: options.infuraProjectId,
+      failoverUrls: options.failoverUrls,
+    }),
+  getMessenger: (parent) => {
+    const networkControllerMessenger: NetworkControllerMessenger =
+      new Messenger({
+        namespace: 'NetworkController',
+        parent,
+      });
+
+    parent.delegate({
+      messenger: networkControllerMessenger,
+      actions: [
+        'ConnectivityController:getState',
+        'RemoteFeatureFlagController:getState',
+      ],
+
+      events: [
+        // eslint-disable-next-line no-restricted-syntax
+        'RemoteFeatureFlagController:stateChange',
+      ],
+    });
+
+    return networkControllerMessenger;
+  },
+};
diff --git a/packages/wallet/src/initialization/instances/network-controller/types.ts b/packages/wallet/src/initialization/instances/network-controller/types.ts
new file mode 100644
index 00000000000..246e2ade719
--- /dev/null
+++ b/packages/wallet/src/initialization/instances/network-controller/types.ts
@@ -0,0 +1,15 @@
+import { Hex } from '@metamask/utils';
+
+/**
+ * Per-instance options for the wallet's `NetworkController`.
+ */
+export type NetworkControllerInstanceOptions = {
+  /**
+   * The API key for Infura, used to make requests to Infura.
+   */
+  infuraProjectId: string;
+  /**
+   * An optional map of available failover URLs for each chain ID.
+   */
+  failoverUrls?: Record<Hex, string[]>;
+};
diff --git a/packages/wallet/src/types.ts b/packages/wallet/src/types.ts
index 0bc6c0efaad..6a66903dde0 100644
--- a/packages/wallet/src/types.ts
+++ b/packages/wallet/src/types.ts
@@ -8,9 +8,10 @@ import type {
 import type { ApprovalControllerInstanceOptions } from './initialization/instances/approval-controller/types';
 import type { ConnectivityControllerInstanceOptions } from './initialization/instances/connectivity-controller/types';
 import type { KeyringControllerInstanceOptions } from './initialization/instances/keyring-controller/types';
+import type { NetworkControllerInstanceOptions } from './initialization/instances/network-controller/types';
 import type { RemoteFeatureFlagControllerInstanceOptions } from './initialization/instances/remote-feature-flag-controller/types';
 import type { StorageServiceInstanceOptions } from './initialization/instances/storage-service/types';
-import { InitializationConfiguration } from './initialization/types';
+import type { InitializationConfiguration } from './initialization/types';
 
 export type WalletOptions = {
   messenger?: RootMessenger<DefaultActions, DefaultEvents>;
@@ -26,6 +27,7 @@ export type InstanceSpecificOptions = {
   approvalController?: ApprovalControllerInstanceOptions;
   connectivityController: ConnectivityControllerInstanceOptions;
   keyringController?: KeyringControllerInstanceOptions;
+  networkController: NetworkControllerInstanceOptions;
   remoteFeatureFlagController: RemoteFeatureFlagControllerInstanceOptions;
   storageService: StorageServiceInstanceOptions;
 };
diff --git a/packages/wallet/tsconfig.build.json b/packages/wallet/tsconfig.build.json
index 317fe28aac2..fcf397e033d 100644
--- a/packages/wallet/tsconfig.build.json
+++ b/packages/wallet/tsconfig.build.json
@@ -13,6 +13,7 @@
     { "path": "../controller-utils/tsconfig.build.json" },
     { "path": "../keyring-controller/tsconfig.build.json" },
     { "path": "../messenger/tsconfig.build.json" },
+    { "path": "../network-controller/tsconfig.build.json" },
     { "path": "../remote-feature-flag-controller/tsconfig.build.json" },
     { "path": "../storage-service/tsconfig.build.json" }
   ],
diff --git a/packages/wallet/tsconfig.json b/packages/wallet/tsconfig.json
index abbd559b3e9..a206b1babae 100644
--- a/packages/wallet/tsconfig.json
+++ b/packages/wallet/tsconfig.json
@@ -11,6 +11,7 @@
     { "path": "../controller-utils/tsconfig.json" },
     { "path": "../keyring-controller/tsconfig.json" },
     { "path": "../messenger/tsconfig.json" },
+    { "path": "../network-controller/tsconfig.json" },
     { "path": "../remote-feature-flag-controller/tsconfig.json" },
     { "path": "../storage-service/tsconfig.json" }
   ],
diff --git a/yarn.lock b/yarn.lock
index fe82fba5629..b5beabe3eb8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8941,6 +8941,7 @@ __metadata:
     "@metamask/controller-utils": "npm:^12.3.0"
     "@metamask/keyring-controller": "npm:^27.1.0"
     "@metamask/messenger": "npm:^1.2.0"
+    "@metamask/network-controller": "npm:^33.0.0"
     "@metamask/remote-feature-flag-controller": "npm:^4.2.2"
     "@metamask/scure-bip39": "npm:^2.1.1"
     "@metamask/storage-service": "npm:^1.0.2"