diff --git a/.changeset/loose-lemons-smell.md b/.changeset/loose-lemons-smell.md
new file mode 100644
index 00000000..13bcf7e9
--- /dev/null
+++ b/.changeset/loose-lemons-smell.md
@@ -0,0 +1,5 @@
+---
+"@reactive-dot/wallet-mimir": minor
+---
+
+Added Mimir wallet integration.
diff --git a/apps/docs/react/getting-started/connect-wallets.mdx b/apps/docs/react/getting-started/connect-wallets.mdx
index d872c56c..1e9abb93 100644
--- a/apps/docs/react/getting-started/connect-wallets.mdx
+++ b/apps/docs/react/getting-started/connect-wallets.mdx
@@ -29,19 +29,27 @@ npm install @reactive-dot/wallet-walletconnect
 npm install @reactive-dot/wallet-ledger
 ```
 
+### [Mimir](https://mimir.global/)
+
+```bash npm2yarn
+npm install @reactive-dot/wallet-mimir
+```
+
 ## Add wallets to the config
 
 ```ts title="config.ts"
 import { defineConfig } from "@reactive-dot/core";
 import { InjectedWalletProvider } from "@reactive-dot/core/wallets.js";
 import { LedgerWallet } from "@reactive-dot/wallet-ledger";
+import { MimirWalletProvider } from "@reactive-dot/wallet-mimir";
 import { WalletConnect } from "@reactive-dot/wallet-walletconnect";
 
 export const config = defineConfig({
   // ...
   wallets: [
     new InjectedWalletProvider(),
-    new LedgerWalet(),
+    new LedgerWallet(),
+    new MimirWalletProvider(),
     new WalletConnect({
       projectId: "WALLET_CONNECT_PROJECT_ID",
       providerOptions: {
diff --git a/apps/docs/vue/getting-started/connect-wallets.mdx b/apps/docs/vue/getting-started/connect-wallets.mdx
index d75e5eb4..03f4c799 100644
--- a/apps/docs/vue/getting-started/connect-wallets.mdx
+++ b/apps/docs/vue/getting-started/connect-wallets.mdx
@@ -29,19 +29,27 @@ npm install @reactive-dot/wallet-walletconnect
 npm install @reactive-dot/wallet-ledger
 ```
 
+### [Mimir](https://mimir.global/)
+
+```bash npm2yarn
+npm install @reactive-dot/wallet-mimir
+```
+
 ## Add wallets to the config
 
 ```ts title="config.ts"
 import { defineConfig } from "@reactive-dot/core";
 import { InjectedWalletProvider } from "@reactive-dot/core/wallets.js";
 import { LedgerWallet } from "@reactive-dot/wallet-ledger";
+import { MimirWalletProvider } from "@reactive-dot/wallet-mimir";
 import { WalletConnect } from "@reactive-dot/wallet-walletconnect";
 
 export const config = defineConfig({
   // ...
   wallets: [
     new InjectedWalletProvider(),
-    new LedgerWalet(),
+    new LedgerWallet(),
+    new MimirWalletProvider(),
     new WalletConnect({
       projectId: "WALLET_CONNECT_PROJECT_ID",
       providerOptions: {
diff --git a/examples/react/package.json b/examples/react/package.json
index 26f919b2..06bdeb0a 100644
--- a/examples/react/package.json
+++ b/examples/react/package.json
@@ -13,6 +13,7 @@
     "@polkadot-api/descriptors": "portal:.papi/descriptors",
     "@reactive-dot/react": "workspace:^",
     "@reactive-dot/wallet-ledger": "workspace:^",
+    "@reactive-dot/wallet-mimir": "workspace:^",
     "@reactive-dot/wallet-walletconnect": "workspace:^",
     "date-fns": "^4.1.0",
     "jotai-devtools": "^0.11.0",
diff --git a/examples/react/src/config.ts b/examples/react/src/config.ts
index 9e1e3db3..1ec9266a 100644
--- a/examples/react/src/config.ts
+++ b/examples/react/src/config.ts
@@ -11,6 +11,7 @@ import { defineConfig } from "@reactive-dot/core";
 import { createLightClientProvider } from "@reactive-dot/core/providers/light-client.js";
 import { InjectedWalletProvider } from "@reactive-dot/core/wallets.js";
 import { LedgerWallet } from "@reactive-dot/wallet-ledger";
+import { MimirWalletProvider } from "@reactive-dot/wallet-mimir";
 import { WalletConnect } from "@reactive-dot/wallet-walletconnect";
 
 const lightClientProvider = createLightClientProvider();
@@ -55,6 +56,7 @@ export const config = defineConfig({
   targetChains: ["polkadot", "kusama", "westend"],
   wallets: [
     new InjectedWalletProvider({ originName: "ReactiveDOT React Example" }),
+    new MimirWalletProvider({ originName: "ReactiveDOT React Example" }),
     new LedgerWallet(),
     new WalletConnect({
       projectId: "68f5b7e972a51cf379b127f51a791c34",
diff --git a/nx.json b/nx.json
index 7c228260..2a44a5da 100644
--- a/nx.json
+++ b/nx.json
@@ -14,5 +14,5 @@
       "cache": true
     }
   },
-  "parallel": 9
+  "parallel": 10
 }
diff --git a/packages/core/src/wallets/injected/wallet.ts b/packages/core/src/wallets/injected/wallet.ts
index 19106805..a8e3c751 100644
--- a/packages/core/src/wallets/injected/wallet.ts
+++ b/packages/core/src/wallets/injected/wallet.ts
@@ -6,7 +6,7 @@ import {
   type InjectedExtension,
   type InjectedPolkadotAccount,
 } from "polkadot-api/pjs-signer";
-import { BehaviorSubject, Observable } from "rxjs";
+import { BehaviorSubject, Observable, of } from "rxjs";
 import { map, switchMap } from "rxjs/operators";
 
 export type InjectedWalletOptions = WalletOptions & { originName?: string };
@@ -33,7 +33,7 @@ export class InjectedWallet extends Wallet<InjectedWalletOptions, "connected"> {
     }
   }
 
-  connected$ = this.#extension$.pipe(
+  readonly connected$ = this.#extension$.pipe(
     map((extension) => extension !== undefined),
   );
 
@@ -53,21 +53,20 @@ export class InjectedWallet extends Wallet<InjectedWalletOptions, "connected"> {
   }
 
   readonly accounts$ = this.#extension$.pipe(
-    switchMap(
-      (extension) =>
-        new Observable<PolkadotSignerAccount[]>((subscriber) => {
-          if (extension === undefined) {
-            subscriber.next([]);
-          } else {
-            subscriber.next(this.#withIds(extension.getAccounts()));
-            subscriber.add(
-              extension.subscribe((accounts) =>
-                subscriber.next(this.#withIds(accounts)),
-              ),
-            );
-          }
-        }),
-    ),
+    switchMap((extension) => {
+      if (extension === undefined) {
+        return of([]);
+      }
+
+      return new Observable<PolkadotSignerAccount[]>((subscriber) => {
+        subscriber.next(this.#withIds(extension.getAccounts()));
+        subscriber.add(
+          extension.subscribe((accounts) =>
+            subscriber.next(this.#withIds(accounts)),
+          ),
+        );
+      });
+    }),
   );
 
   override getAccounts() {
diff --git a/packages/wallet-mimir/.gitignore b/packages/wallet-mimir/.gitignore
new file mode 100644
index 00000000..378eac25
--- /dev/null
+++ b/packages/wallet-mimir/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/packages/wallet-mimir/CHANGELOG.md b/packages/wallet-mimir/CHANGELOG.md
new file mode 100644
index 00000000..a5720e44
--- /dev/null
+++ b/packages/wallet-mimir/CHANGELOG.md
@@ -0,0 +1,174 @@
+# @reactive-dot/wallet-ledger
+
+## 0.16.25
+
+### Patch Changes
+
+- Updated dependencies [[`b6c5cc7`](https://github.com/tien/reactive-dot/commit/b6c5cc7a9d4ba82b2d8c890cfcc569fe6703951f)]:
+  - @reactive-dot/core@0.33.0
+
+## 0.16.24
+
+### Patch Changes
+
+- [#495](https://github.com/tien/reactive-dot/pull/495) [`3372262`](https://github.com/tien/reactive-dot/commit/33722622b1a8104e71ae3ce0776f7ef9609da922) Thanks [@tien](https://github.com/tien)! - Excluded tests from bundle.
+
+- Updated dependencies []:
+  - @reactive-dot/core@0.32.0
+
+## 0.16.23
+
+### Patch Changes
+
+- Updated dependencies [[`776d1ef`](https://github.com/tien/reactive-dot/commit/776d1ef29777550fdcec83b11713e53a68624d14)]:
+  - @reactive-dot/core@0.31.0
+
+## 0.16.22
+
+### Patch Changes
+
+- Updated dependencies [[`821f21b`](https://github.com/tien/reactive-dot/commit/821f21b511b4c7ef8b0eff2e3f9eb0a3addb36ac), [`dcc8c24`](https://github.com/tien/reactive-dot/commit/dcc8c241c7543bebecdc73438f627d6f7fd0610e)]:
+  - @reactive-dot/core@0.30.0
+
+## 0.16.21
+
+### Patch Changes
+
+- Updated dependencies [[`6e1ded0`](https://github.com/tien/reactive-dot/commit/6e1ded07876d9ee6471830038e8910c369f14a4b)]:
+  - @reactive-dot/core@0.29.0
+
+## 0.16.20
+
+### Patch Changes
+
+- Updated dependencies [[`aeef030`](https://github.com/tien/reactive-dot/commit/aeef0303347668d7c53de3373f581b95a723fb17)]:
+  - @reactive-dot/core@0.27.1
+
+## 0.16.19
+
+### Patch Changes
+
+- Updated dependencies [[`f1d984f`](https://github.com/tien/reactive-dot/commit/f1d984f0347de0928e09ab9b99a9989586031d52)]:
+  - @reactive-dot/core@0.27.0
+
+## 0.16.18
+
+### Patch Changes
+
+- Updated dependencies [[`a3da0de`](https://github.com/tien/reactive-dot/commit/a3da0de4207499ff6e766f7affd08d086803a897)]:
+  - @reactive-dot/core@0.26.2
+
+## 0.16.17
+
+### Patch Changes
+
+- Updated dependencies [[`a638b48`](https://github.com/tien/reactive-dot/commit/a638b48e595f5dd6d87141f12f62616b507f3ed8), [`e5c37d0`](https://github.com/tien/reactive-dot/commit/e5c37d04fbdf5515c09f65875c4f8f6c6c1c5f01)]:
+  - @reactive-dot/core@0.26.1
+
+## 0.16.16
+
+### Patch Changes
+
+- Updated dependencies [[`ee5d6a3`](https://github.com/tien/reactive-dot/commit/ee5d6a305cd1bfe9213ea82d5c81d0e1bcce2dfa)]:
+  - @reactive-dot/core@0.26.0
+
+## 0.16.15
+
+### Patch Changes
+
+- Updated dependencies [[`ed4e82d`](https://github.com/tien/reactive-dot/commit/ed4e82d3eed9499f0c59d3bb1fceb151ce1e305a)]:
+  - @reactive-dot/core@0.25.1
+
+## 0.16.14
+
+### Patch Changes
+
+- [#304](https://github.com/tien/reactive-dot/pull/304) [`0958ce1`](https://github.com/tien/reactive-dot/commit/0958ce1f6c06f6e163b4ce6e8f012caf4fb34040) Thanks [@tien](https://github.com/tien)! - Added default implementation for `Wallet.getAccounts`.
+
+- Updated dependencies [[`bbda9ef`](https://github.com/tien/reactive-dot/commit/bbda9ef093e87a96d6eb23ba51464ec02ba08bb2), [`0958ce1`](https://github.com/tien/reactive-dot/commit/0958ce1f6c06f6e163b4ce6e8f012caf4fb34040), [`13c5dae`](https://github.com/tien/reactive-dot/commit/13c5dae1a0ca5500d798ac31e3a8b81bc9d3f78a)]:
+  - @reactive-dot/core@0.24.1
+
+## 0.16.13
+
+### Patch Changes
+
+- Updated dependencies [[`2bdab49`](https://github.com/tien/reactive-dot/commit/2bdab4925c736a81245936fb4034984dd4211f23)]:
+  - @reactive-dot/core@0.24.0
+
+## 0.16.12
+
+### Patch Changes
+
+- Updated dependencies [[`fccd977`](https://github.com/tien/reactive-dot/commit/fccd9778365d71a6903560513455f033fded0b4c)]:
+  - @reactive-dot/core@0.23.0
+
+## 0.16.11
+
+### Patch Changes
+
+- Updated dependencies [[`02b5633`](https://github.com/tien/reactive-dot/commit/02b56338948e32463b9b3e682340a25920386d91)]:
+  - @reactive-dot/core@0.22.0
+
+## 0.16.10
+
+### Patch Changes
+
+- Updated dependencies [[`2c30634`](https://github.com/tien/reactive-dot/commit/2c3063493977b78c95312b507332cced8296e66b)]:
+  - @reactive-dot/core@0.21.0
+
+## 0.16.9
+
+### Patch Changes
+
+- Updated dependencies [[`08e5517`](https://github.com/tien/reactive-dot/commit/08e5517f01bb24285ef4684f6de27753e3a9f2e9)]:
+  - @reactive-dot/core@0.20.0
+
+## 0.16.8
+
+### Patch Changes
+
+- Updated dependencies [[`98bb09e`](https://github.com/tien/reactive-dot/commit/98bb09e623805cf772dd42ce1ed144f569a71bae)]:
+  - @reactive-dot/core@0.19.0
+
+## 0.16.7
+
+### Patch Changes
+
+- Updated dependencies [[`42d6d34`](https://github.com/tien/reactive-dot/commit/42d6d343bb299d56b14a18dd0d7e54c90d20c1b6)]:
+  - @reactive-dot/core@0.18.0
+
+## 0.16.6
+
+### Patch Changes
+
+- [#257](https://github.com/tien/reactive-dot/pull/257) [`ce4db82`](https://github.com/tien/reactive-dot/commit/ce4db82577957a7d029c072d953b4c5e6e6462aa) Thanks [@tien](https://github.com/tien)! - Fixed `Wallet.getAccounts` incorrectly used `lastValueFrom` instead of `firstValueFrom`.
+
+## 0.16.5
+
+### Patch Changes
+
+- Updated dependencies []:
+  - @reactive-dot/core@0.16.5
+
+## 0.16.3
+
+### Patch Changes
+
+- [#219](https://github.com/tien/reactive-dot/pull/219) [`50107c5`](https://github.com/tien/reactive-dot/commit/50107c56c8b8e6bc1adb3a1f6dc9cda60150838a) Thanks [@tien](https://github.com/tien)! - Sort Ledger accounts by derivation path.
+
+## 0.16.1
+
+### Patch Changes
+
+- [#214](https://github.com/tien/reactive-dot/pull/214) [`24913cb`](https://github.com/tien/reactive-dot/commit/24913cb9340e8f2752269d1abcbdf900ecfdabf8) Thanks [@tien](https://github.com/tien)! - Fixed incorrect CommonJS import for Buffer polyfill.
+
+## 0.16.0
+
+### Minor Changes
+
+- [#168](https://github.com/tien/reactive-dot/pull/168) [`1c4fdee`](https://github.com/tien/reactive-dot/commit/1c4fdee520b066254c48ba58562c50d75473da69) Thanks [@tien](https://github.com/tien)! - Added Ledger wallet integration.
+
+### Patch Changes
+
+- Updated dependencies [[`1c4fdee`](https://github.com/tien/reactive-dot/commit/1c4fdee520b066254c48ba58562c50d75473da69)]:
+  - @reactive-dot/core@0.16.0
diff --git a/packages/wallet-mimir/eslint.config.js b/packages/wallet-mimir/eslint.config.js
new file mode 100644
index 00000000..52e9273c
--- /dev/null
+++ b/packages/wallet-mimir/eslint.config.js
@@ -0,0 +1,4 @@
+import recommended from "@reactive-dot/eslint-config";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(...recommended);
diff --git a/packages/wallet-mimir/package.json b/packages/wallet-mimir/package.json
new file mode 100644
index 00000000..a6b9cf69
--- /dev/null
+++ b/packages/wallet-mimir/package.json
@@ -0,0 +1,47 @@
+{
+  "name": "@reactive-dot/wallet-mimir",
+  "version": "0.0.0",
+  "description": "Mimir adapter for Reactive DOT",
+  "keywords": [
+    "substrate",
+    "polkadot",
+    "mimir"
+  ],
+  "homepage": "https://reactivedot.dev/",
+  "bugs": {
+    "url": "https://github.com/tien/reactive-dot/issues",
+    "email": "tien.nguyenkhac@icloud.com"
+  },
+  "license": "LGPL-3.0-or-later",
+  "author": "Tiến Nguyễn Khắc <tien.nguyenkhac@icloud.com> (https://tien.zone/)",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/tien/reactive-dot.git",
+    "directory": "packages/wallet-mimir"
+  },
+  "type": "module",
+  "files": [
+    "src",
+    "build"
+  ],
+  "exports": "./build/index.js",
+  "scripts": {
+    "dev": "tsc --build --watch",
+    "build": "rm -rf build && tsc --build",
+    "lint": "eslint src",
+    "test": "vitest"
+  },
+  "dependencies": {
+    "@mimirdev/apps-inject": "^3.1.1",
+    "@mimirdev/papi-signer": "^3.1.0",
+    "@reactive-dot/core": "workspace:^"
+  },
+  "devDependencies": {
+    "@reactive-dot/eslint-config": "workspace:^",
+    "@tsconfig/recommended": "^1.0.8",
+    "@tsconfig/strictest": "^2.0.5",
+    "eslint": "^9.21.0",
+    "typescript": "^5.7.3",
+    "vitest": "^3.0.6"
+  }
+}
diff --git a/packages/wallet-mimir/src/index.test.ts b/packages/wallet-mimir/src/index.test.ts
new file mode 100644
index 00000000..cd1c4906
--- /dev/null
+++ b/packages/wallet-mimir/src/index.test.ts
@@ -0,0 +1,10 @@
+import * as exports from "./index.js";
+import { expect, it } from "vitest";
+
+it("should match inline snapshot", () =>
+  expect(Object.keys(exports)).toMatchInlineSnapshot(`
+    [
+      "MimirWalletProvider",
+      "MimirWallet",
+    ]
+  `));
diff --git a/packages/wallet-mimir/src/index.ts b/packages/wallet-mimir/src/index.ts
new file mode 100644
index 00000000..dcfe171c
--- /dev/null
+++ b/packages/wallet-mimir/src/index.ts
@@ -0,0 +1,2 @@
+export { MimirWalletProvider } from "./mimir-wallet-provider.js";
+export { MimirWallet } from "./mimir-wallet.js";
diff --git a/packages/wallet-mimir/src/mimir-wallet-provider.test.ts b/packages/wallet-mimir/src/mimir-wallet-provider.test.ts
new file mode 100644
index 00000000..0307f810
--- /dev/null
+++ b/packages/wallet-mimir/src/mimir-wallet-provider.test.ts
@@ -0,0 +1,33 @@
+import { MimirWalletProvider } from "./mimir-wallet-provider.js";
+import { MimirWallet } from "./mimir-wallet.js";
+import { isMimirReady } from "@mimirdev/apps-inject";
+import { describe, it, expect, vi, beforeEach } from "vitest";
+
+vi.mock("@mimirdev/apps-inject");
+vi.mock("./mimir-wallet.js");
+
+let provider: MimirWalletProvider;
+
+beforeEach(() => {
+  provider = new MimirWalletProvider();
+
+  vi.clearAllMocks();
+});
+
+describe("getWallets", () => {
+  it("should return empty array when Mimir is not ready", async () => {
+    vi.mocked(isMimirReady).mockResolvedValue(null);
+    const wallets = await provider.getWallets();
+
+    expect(wallets).toEqual([]);
+    expect(isMimirReady).toHaveBeenCalled();
+  });
+
+  it("should return MimirWallet instance when Mimir is ready", async () => {
+    vi.mocked(isMimirReady).mockResolvedValue("origin");
+    const wallets = await provider.getWallets();
+
+    expect(wallets).toHaveLength(1);
+    expect(wallets[0]).toBeInstanceOf(MimirWallet);
+  });
+});
diff --git a/packages/wallet-mimir/src/mimir-wallet-provider.ts b/packages/wallet-mimir/src/mimir-wallet-provider.ts
new file mode 100644
index 00000000..f0f1c0c2
--- /dev/null
+++ b/packages/wallet-mimir/src/mimir-wallet-provider.ts
@@ -0,0 +1,19 @@
+import { MimirWallet, type MimirWalletOptions } from "./mimir-wallet.js";
+import { isMimirReady } from "@mimirdev/apps-inject";
+import { WalletProvider } from "@reactive-dot/core/wallets.js";
+
+export class MimirWalletProvider extends WalletProvider {
+  constructor(private readonly options?: MimirWalletOptions) {
+    super();
+  }
+
+  async getWallets() {
+    const origin = await isMimirReady();
+
+    if (origin === null) {
+      return [];
+    }
+
+    return [new MimirWallet(this.options)];
+  }
+}
diff --git a/packages/wallet-mimir/src/mimir-wallet.test.ts b/packages/wallet-mimir/src/mimir-wallet.test.ts
new file mode 100644
index 00000000..7cae4efe
--- /dev/null
+++ b/packages/wallet-mimir/src/mimir-wallet.test.ts
@@ -0,0 +1,183 @@
+import { MimirWallet } from "./mimir-wallet.js";
+import { MimirPAPISigner } from "@mimirdev/papi-signer";
+import { ReactiveDotError, Storage as WalletStorage } from "@reactive-dot/core";
+import { firstValueFrom } from "rxjs";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("@mimirdev/papi-signer");
+
+let wallet: MimirWallet;
+
+beforeEach(() => {
+  const inMemorySimpleStorage = {
+    items: new Map(),
+    getItem(key: string) {
+      return this.items.get(key) ?? null;
+    },
+    removeItem(key: string) {
+      this.items.delete(key);
+    },
+    setItem(key: string, value: string) {
+      this.items.set(key, value);
+    },
+  };
+
+  const inMemoryStorage = new WalletStorage({
+    prefix: "@reactive-dot",
+    storage: inMemorySimpleStorage,
+  });
+
+  wallet = new MimirWallet({
+    originName: "test-origin",
+    storage: inMemoryStorage,
+  });
+
+  vi.clearAllMocks();
+});
+
+afterEach(() => {
+  wallet.disconnect();
+});
+
+describe("constructor", () => {
+  it("should create instance with correct id and name", () => {
+    expect(wallet.id).toBe("mimir");
+    expect(wallet.name).toBe("Mimir");
+  });
+});
+
+describe("connect", () => {
+  it("should connect successfully", async () => {
+    const mockSigner = {
+      enable: vi.fn().mockResolvedValue({ result: true }),
+      getAccounts: vi.fn().mockResolvedValue([]),
+    };
+
+    vi.mocked(MimirPAPISigner).mockImplementation(
+      () => mockSigner as unknown as MimirPAPISigner,
+    );
+
+    await wallet.connect();
+
+    expect(mockSigner.enable).toHaveBeenCalledWith("test-origin");
+    expect(await firstValueFrom(wallet.connected$)).toBeTruthy();
+  });
+
+  it("should throw error on failed connection", async () => {
+    const mockSigner = {
+      enable: vi.fn().mockResolvedValue({ result: false }),
+    };
+
+    vi.mocked(MimirPAPISigner).mockImplementation(
+      () => mockSigner as unknown as MimirPAPISigner,
+    );
+
+    await expect(wallet.connect()).rejects.toThrow(ReactiveDotError);
+  });
+});
+
+describe("$accounts", () => {
+  it("should emit an empty array when not connected", async () => {
+    const emittedAccounts = await firstValueFrom(wallet.accounts$);
+    expect(emittedAccounts).toEqual([]);
+  });
+
+  it("should emit updated accounts when subscribeAccounts callback is triggered", async () => {
+    // Prepare a controlled subscribeAccounts callback.
+    let accountsCallback: ((accounts: unknown[]) => void) | undefined;
+    const subscribeAccountsMock = vi.fn((cb: (accounts: unknown[]) => void) => {
+      accountsCallback = cb;
+      // Return a dummy unsubscribe function.
+      return () => {};
+    });
+
+    const mockSigner = {
+      enable: vi.fn().mockResolvedValue({ result: true }),
+      getAccounts: vi.fn().mockResolvedValue([]),
+      subscribeAccounts: subscribeAccountsMock,
+      getPolkadotSigner: vi
+        .fn()
+        .mockImplementation((address: string) => ({ address })),
+    };
+
+    vi.mocked(MimirPAPISigner).mockImplementation(
+      () => mockSigner as unknown as MimirPAPISigner,
+    );
+
+    await wallet.connect();
+
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    let emittedAccounts: any[] = [];
+    const subscription = wallet.accounts$.subscribe((accounts) => {
+      emittedAccounts = accounts;
+    });
+
+    // Ensure subscribeAccounts was called.
+    expect(subscribeAccountsMock).toHaveBeenCalled();
+
+    // Trigger the subscription callback with mock account data.
+    const mockAccountsData = [{ address: "account1" }, { address: "account2" }];
+    if (accountsCallback) {
+      accountsCallback(mockAccountsData);
+    }
+
+    // Allow for asynchronous propagation.
+    await new Promise((resolve) => setTimeout(resolve, 0));
+
+    expect(emittedAccounts.length).toBe(2);
+    expect(emittedAccounts[0].address).toBe("account1");
+    expect(emittedAccounts[0].id).toBe("0");
+    expect(emittedAccounts[1].address).toBe("account2");
+    expect(emittedAccounts[1].id).toBe("1");
+
+    subscription.unsubscribe();
+  });
+});
+
+describe("getAccounts", () => {
+  it("should throw error when not connected", async () => {
+    await expect(wallet.getAccounts()).rejects.toThrow(
+      "Mimir is not connected",
+    );
+  });
+
+  it("should return accounts when connected", async () => {
+    const mockAccounts = [{ address: "test-address" }];
+    const mockSigner = {
+      enable: vi.fn().mockResolvedValue({ result: true }),
+      getAccounts: vi.fn().mockResolvedValue(mockAccounts),
+      getPolkadotSigner: vi.fn().mockReturnValue({}),
+    };
+
+    vi.mocked(MimirPAPISigner).mockImplementation(
+      () => mockSigner as unknown as MimirPAPISigner,
+    );
+
+    await wallet.connect();
+    const accounts = await wallet.getAccounts();
+
+    expect(accounts[0].address).toBe("test-address");
+    expect(accounts[0].id).toBe("0");
+  });
+});
+
+describe("initialize", () => {
+  it("should connect if previously connected", async () => {
+    const mockSigner = {
+      enable: vi.fn().mockResolvedValue({ result: true }),
+      getAccounts: vi.fn().mockResolvedValue([]),
+    };
+
+    vi.mocked(MimirPAPISigner).mockImplementation(
+      () => mockSigner as unknown as MimirPAPISigner,
+    );
+
+    // @ts-expect-error using protected method for testing
+    wallet.storage.setItem("connected", JSON.stringify(true));
+
+    const connectSpy = vi.spyOn(wallet, "connect");
+    await wallet.initialize();
+
+    expect(connectSpy).toHaveBeenCalled();
+  });
+});
diff --git a/packages/wallet-mimir/src/mimir-wallet.ts b/packages/wallet-mimir/src/mimir-wallet.ts
new file mode 100644
index 00000000..89060044
--- /dev/null
+++ b/packages/wallet-mimir/src/mimir-wallet.ts
@@ -0,0 +1,94 @@
+import type { InjectedAccount } from "@mimirdev/apps-transports";
+import { MimirPAPISigner } from "@mimirdev/papi-signer";
+import { ReactiveDotError } from "@reactive-dot/core";
+import {
+  type PolkadotSignerAccount,
+  Wallet,
+  type WalletOptions,
+} from "@reactive-dot/core/wallets.js";
+import { BehaviorSubject, Observable, of } from "rxjs";
+import { map, switchMap } from "rxjs/operators";
+
+export type MimirWalletOptions = WalletOptions & { originName?: string };
+
+export class MimirWallet extends Wallet<MimirWalletOptions, "connected"> {
+  readonly id = "mimir";
+
+  readonly name = "Mimir";
+
+  readonly #mimir$ = new BehaviorSubject<MimirPAPISigner | undefined>(
+    undefined,
+  );
+
+  readonly connected$ = this.#mimir$.pipe(map((mimir) => mimir !== undefined));
+
+  readonly accounts$ = this.#mimir$.pipe(
+    switchMap((mimir) => {
+      if (mimir === undefined) {
+        return of([]);
+      }
+
+      return new Observable<PolkadotSignerAccount[]>((subscriber) => {
+        subscriber.add(
+          mimir.subscribeAccounts((accounts) =>
+            subscriber.next(this.#toPolkadotSignerAccount(mimir, accounts)),
+          ),
+        );
+      });
+    }),
+  );
+
+  constructor(options?: MimirWalletOptions) {
+    super(options);
+  }
+
+  override async getAccounts() {
+    const mimir = this.#mimir$.getValue();
+
+    if (mimir === undefined) {
+      throw new ReactiveDotError("Mimir is not connected");
+    }
+
+    return this.#toPolkadotSignerAccount(mimir, await mimir.getAccounts());
+  }
+
+  async initialize() {
+    if (this.storage.getItem("connected") !== null) {
+      await this.connect();
+    }
+  }
+
+  async connect() {
+    const signer = new MimirPAPISigner();
+
+    const { result } = await signer.enable(
+      this.options?.originName ?? globalThis.origin,
+    );
+
+    if (!result) {
+      throw new ReactiveDotError("Failed to connect to Mimir");
+    }
+
+    this.#mimir$.next(signer);
+    this.storage.setItem("connected", JSON.stringify(true));
+  }
+
+  disconnect() {
+    this.#mimir$.next(undefined);
+    this.storage.removeItem("connected");
+  }
+
+  #toPolkadotSignerAccount(
+    mimir: MimirPAPISigner,
+    accounts: InjectedAccount[],
+  ) {
+    return accounts.map(
+      (account, index) =>
+        ({
+          id: index.toString(),
+          polkadotSigner: mimir.getPolkadotSigner(account.address),
+          ...account,
+        }) satisfies PolkadotSignerAccount,
+    );
+  }
+}
diff --git a/packages/wallet-mimir/tsconfig.json b/packages/wallet-mimir/tsconfig.json
new file mode 100644
index 00000000..e720ff51
--- /dev/null
+++ b/packages/wallet-mimir/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "extends": [
+    "@tsconfig/recommended/tsconfig.json",
+    "@tsconfig/strictest/tsconfig.json"
+  ],
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "outDir": "build"
+  },
+  "include": ["src"],
+  "exclude": ["**/*.test.*"]
+}
diff --git a/packages/wallet-mimir/vitest.config.ts b/packages/wallet-mimir/vitest.config.ts
new file mode 100644
index 00000000..d7b613c2
--- /dev/null
+++ b/packages/wallet-mimir/vitest.config.ts
@@ -0,0 +1,3 @@
+import { defineProject } from "vitest/config";
+
+export default defineProject({});
diff --git a/yarn.lock b/yarn.lock
index ce1e9444..4bf6b1f3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4221,6 +4221,45 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@mimirdev/apps-inject@npm:^3.1.1":
+  version: 3.1.1
+  resolution: "@mimirdev/apps-inject@npm:3.1.1"
+  dependencies:
+    "@mimirdev/apps-sdk": "npm:^3.1.0"
+  checksum: 10c0/0a7467b902c79763e7f98d505117d5ed1aa373a35dd42977e5320308af5fe2b34374d09d542e3cd3b370bd7c49f3abd1a923ed3dcec8646b7fdc8b627f67a8c7
+  languageName: node
+  linkType: hard
+
+"@mimirdev/apps-sdk@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@mimirdev/apps-sdk@npm:3.1.0"
+  dependencies:
+    eventemitter3: "npm:^5.0.1"
+  checksum: 10c0/ea386ae9addc278c2b1bd2ca2c8782212b5bd8f4c506fc2faa8262c699aaa1e558c683e96884d00d1fd18a36a3aa3dd1c396864767bc05ca3799876995ead97e
+  languageName: node
+  linkType: hard
+
+"@mimirdev/apps-transports@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@mimirdev/apps-transports@npm:3.1.0"
+  checksum: 10c0/66505dc5792348793b81e6c4a13147d0a4459a7584b788cd928ebe128cc1fe29ff1ab1c547d88043bb0074ab44a7ad97965525b6229e38665814568ad05c8eab
+  languageName: node
+  linkType: hard
+
+"@mimirdev/papi-signer@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@mimirdev/papi-signer@npm:3.1.0"
+  dependencies:
+    "@mimirdev/apps-sdk": "npm:^3.1.0"
+    "@mimirdev/apps-transports": "npm:^3.1.0"
+  peerDependencies:
+    "@polkadot-api/polkadot-signer": "*"
+    "@polkadot-api/substrate-bindings": "*"
+    "@polkadot-api/utils": "*"
+  checksum: 10c0/81deafbcfe9455e0ae79d3b0de947909a90625402087da647f926800716e9bbd0a4997ae4bbe07047b9f556c26c21a3075fba7d7060b7e73959f0fd1aa8ded92
+  languageName: node
+  linkType: hard
+
 "@motionone/animation@npm:^10.15.1, @motionone/animation@npm:^10.18.0":
   version: 10.18.0
   resolution: "@motionone/animation@npm:10.18.0"
@@ -5022,6 +5061,7 @@ __metadata:
     "@reactive-dot/eslint-config": "workspace:^"
     "@reactive-dot/react": "workspace:^"
     "@reactive-dot/wallet-ledger": "workspace:^"
+    "@reactive-dot/wallet-mimir": "workspace:^"
     "@reactive-dot/wallet-walletconnect": "workspace:^"
     "@tsconfig/recommended": "npm:^1.0.8"
     "@tsconfig/strictest": "npm:^2.0.5"
@@ -5129,6 +5169,22 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@reactive-dot/wallet-mimir@workspace:^, @reactive-dot/wallet-mimir@workspace:packages/wallet-mimir":
+  version: 0.0.0-use.local
+  resolution: "@reactive-dot/wallet-mimir@workspace:packages/wallet-mimir"
+  dependencies:
+    "@mimirdev/apps-inject": "npm:^3.1.1"
+    "@mimirdev/papi-signer": "npm:^3.1.0"
+    "@reactive-dot/core": "workspace:^"
+    "@reactive-dot/eslint-config": "workspace:^"
+    "@tsconfig/recommended": "npm:^1.0.8"
+    "@tsconfig/strictest": "npm:^2.0.5"
+    eslint: "npm:^9.21.0"
+    typescript: "npm:^5.7.3"
+    vitest: "npm:^3.0.6"
+  languageName: unknown
+  linkType: soft
+
 "@reactive-dot/wallet-walletconnect@workspace:^, @reactive-dot/wallet-walletconnect@workspace:packages/wallet-walletconnect":
   version: 0.0.0-use.local
   resolution: "@reactive-dot/wallet-walletconnect@workspace:packages/wallet-walletconnect"
@@ -10831,6 +10887,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"eventemitter3@npm:^5.0.1":
+  version: 5.0.1
+  resolution: "eventemitter3@npm:5.0.1"
+  checksum: 10c0/4ba5c00c506e6c786b4d6262cfbce90ddc14c10d4667e5c83ae993c9de88aa856033994dd2b35b83e8dc1170e224e66a319fa80adc4c32adcd2379bbc75da814
+  languageName: node
+  linkType: hard
+
 "events@npm:3.3.0, events@npm:^3.2.0, events@npm:^3.3.0":
   version: 3.3.0
   resolution: "events@npm:3.3.0"