diff --git a/modules/bitgo/test/v2/unit/wallets.ts b/modules/bitgo/test/v2/unit/wallets.ts
index c9e2c3999f..faeb536d5b 100644
--- a/modules/bitgo/test/v2/unit/wallets.ts
+++ b/modules/bitgo/test/v2/unit/wallets.ts
@@ -4440,6 +4440,34 @@ describe('V2 Wallets:', function () {
     });
   });
 
+  describe('cancelShare', function () {
+    it('should send DELETE to /walletshare/:id and return the result', async function () {
+      const bitgo = TestBitGo.decorate(BitGo, { env: 'mock' });
+      bitgo.initializeTestVars();
+      const basecoin = bitgo.coin('tbtc');
+      const wallets = basecoin.wallets();
+      const bgUrl = common.Environments[bitgo.getEnv()].uri;
+      const shareId = 'abc123shareId';
+
+      nock(bgUrl)
+        .delete(`/api/v2/tbtc/walletshare/${shareId}`)
+        .reply(200, { changed: true, state: 'canceled' });
+
+      const result = await wallets.cancelShare({ walletShareId: shareId });
+      result.should.have.property('changed', true);
+      result.should.have.property('state', 'canceled');
+    });
+
+    it('should throw if walletShareId is missing', async function () {
+      const bitgo = TestBitGo.decorate(BitGo, { env: 'mock' });
+      bitgo.initializeTestVars();
+      const basecoin = bitgo.coin('tbtc');
+      const wallets = basecoin.wallets();
+
+      await wallets.cancelShare({}).should.be.rejectedWith('walletShareId must be a string');
+    });
+  });
+
   describe('List Wallets:', function () {
     it('should list wallets with skipReceiveAddress = true', async function () {
       const bitgo = TestBitGo.decorate(BitGo, { env: 'mock' });
diff --git a/modules/express/src/clientRoutes.ts b/modules/express/src/clientRoutes.ts
index dd5fdc99a2..dc36b9195e 100755
--- a/modules/express/src/clientRoutes.ts
+++ b/modules/express/src/clientRoutes.ts
@@ -862,6 +862,15 @@ async function handleV2AcceptWalletShare(req: express.Request) {
   return coin.wallets().acceptShare(params);
 }
 
+/**
+ * handle cancel wallet share
+ */
+export async function handleV2CancelWalletShare(req: ExpressApiRouteRequest<'express.wallet.cancelShare', 'delete'>) {
+  const bitgo = req.bitgo;
+  const coin = bitgo.coin(req.decoded.coin);
+  return coin.wallets().cancelShare({ walletShareId: req.decoded.id });
+}
+
 /**
  * handle wallet sign transaction
  */
@@ -2060,6 +2069,7 @@ export function setupAPIRoutes(app: express.Application, config: Config): void {
   router.post('express.v2.address.derive', [prepareBitGo(config), typedPromiseWrapper(handleV2DeriveAddress)]);
 
   router.post('express.wallet.share', [prepareBitGo(config), typedPromiseWrapper(handleV2ShareWallet)]);
+  router.delete('express.wallet.cancelShare', [prepareBitGo(config), typedPromiseWrapper(handleV2CancelWalletShare)]);
   app.post(
     '/api/v2/:coin/walletshare/:id/acceptshare',
     parseBody,
diff --git a/modules/express/src/typedRoutes/api/index.ts b/modules/express/src/typedRoutes/api/index.ts
index 85adc8a2ea..83d694f525 100644
--- a/modules/express/src/typedRoutes/api/index.ts
+++ b/modules/express/src/typedRoutes/api/index.ts
@@ -40,6 +40,7 @@ import { PostCoinSignTx } from './v2/coinSignTx';
 import { PostWalletSignTx } from './v2/walletSignTx';
 import { PostWalletTxSignTSS } from './v2/walletTxSignTSS';
 import { PostShareWallet } from './v2/shareWallet';
+import { DeleteCancelWalletShare } from './v2/cancelWalletShare';
 import { PutExpressWalletUpdate } from './v2/expressWalletUpdate';
 import { PostFanoutUnspents } from './v2/fanoutUnspents';
 import { PostSendMany } from './v2/sendmany';
@@ -345,6 +346,9 @@ export const ExpressWalletManagementApiSpec = apiSpec({
   'express.wallet.share': {
     post: PostShareWallet,
   },
+  'express.wallet.cancelShare': {
+    delete: DeleteCancelWalletShare,
+  },
   'express.wallet.update': {
     put: PutExpressWalletUpdate,
   },
diff --git a/modules/express/src/typedRoutes/api/v2/cancelWalletShare.ts b/modules/express/src/typedRoutes/api/v2/cancelWalletShare.ts
new file mode 100644
index 0000000000..4f8d03ce34
--- /dev/null
+++ b/modules/express/src/typedRoutes/api/v2/cancelWalletShare.ts
@@ -0,0 +1,47 @@
+import * as t from 'io-ts';
+import { httpRoute, httpRequest } from '@api-ts/io-ts-http';
+import { BitgoExpressError } from '../../schemas/error';
+import { ShareState } from '../../schemas/wallet';
+
+/**
+ * Path parameters for canceling a wallet share
+ */
+export const CancelWalletShareParams = {
+  /** A cryptocurrency or token ticker symbol. */
+  coin: t.string,
+  /** The wallet share ID to cancel. */
+  id: t.string,
+} as const;
+
+/**
+ * Response for canceling a wallet share
+ */
+export const CancelWalletShareResponse200 = t.type({
+  /** Whether the share state was changed by this operation. */
+  changed: t.boolean,
+  /** Current state of the wallet share after the operation. */
+  state: ShareState,
+});
+
+export const CancelWalletShareResponse = {
+  200: CancelWalletShareResponse200,
+  400: BitgoExpressError,
+} as const;
+
+/**
+ * Cancel a pending wallet share invitation
+ *
+ * Cancels an outgoing wallet share that has not yet been accepted.
+ * Only the user who created the share can cancel it.
+ *
+ * @operationId express.wallet.cancelShare
+ * @tag Express
+ */
+export const DeleteCancelWalletShare = httpRoute({
+  path: '/api/v2/{coin}/walletshare/{id}',
+  method: 'DELETE',
+  request: httpRequest({
+    params: CancelWalletShareParams,
+  }),
+  response: CancelWalletShareResponse,
+});
diff --git a/modules/express/test/unit/clientRoutes/cancelWalletShare.ts b/modules/express/test/unit/clientRoutes/cancelWalletShare.ts
new file mode 100644
index 0000000000..8a0e969e20
--- /dev/null
+++ b/modules/express/test/unit/clientRoutes/cancelWalletShare.ts
@@ -0,0 +1,91 @@
+import * as sinon from 'sinon';
+import 'should-http';
+import 'should-sinon';
+import '../../lib/asserts';
+import nock from 'nock';
+import { TestBitGo, TestBitGoAPI } from '@bitgo/sdk-test';
+import { BitGo } from 'bitgo';
+import { BaseCoin, Wallets, decodeOrElse, common } from '@bitgo/sdk-core';
+import { ExpressApiRouteRequest } from '../../../src/typedRoutes/api';
+import { handleV2CancelWalletShare } from '../../../src/clientRoutes';
+import { CancelWalletShareResponse } from '../../../src/typedRoutes/api/v2/cancelWalletShare';
+
+describe('Cancel Wallet Share (typed handler)', () => {
+  let bitgo: TestBitGoAPI;
+
+  before(async function () {
+    if (!nock.isActive()) {
+      nock.activate();
+    }
+    bitgo = TestBitGo.decorate(BitGo, { env: 'test' });
+    bitgo.initializeTestVars();
+    nock.disableNetConnect();
+    nock.enableNetConnect('127.0.0.1');
+  });
+
+  after(() => {
+    if (nock.isActive()) {
+      nock.restore();
+    }
+  });
+
+  it('should call cancelShare and return a typed response', async () => {
+    const coin = 'tbtc';
+    const shareId = 'abc123shareId';
+
+    const cancelResponse = {
+      changed: true,
+      state: 'canceled',
+    };
+
+    const cancelShareStub = sinon.stub().resolves(cancelResponse);
+    const coinStub = sinon.createStubInstance(BaseCoin, {
+      wallets: sinon.stub<[], Wallets>().returns({
+        cancelShare: cancelShareStub,
+      } as any),
+    });
+
+    const stubBitgo = sinon.createStubInstance(BitGo, { coin: sinon.stub<[string]>().returns(coinStub) });
+
+    const req = {
+      bitgo: stubBitgo,
+      decoded: {
+        coin,
+        id: shareId,
+      },
+    } as unknown as ExpressApiRouteRequest<'express.wallet.cancelShare', 'delete'>;
+
+    const res = await handleV2CancelWalletShare(req);
+
+    cancelShareStub.calledOnceWith({ walletShareId: shareId }).should.be.true();
+    decodeOrElse('CancelWalletShareResponse200', CancelWalletShareResponse[200], res, (errors) => {
+      throw new Error(`Response did not match expected codec: ${errors}`);
+    });
+  });
+
+  it('should pass the walletShareId from the route param to cancelShare', async () => {
+    const coin = 'tbtc';
+    const shareId = 'someOtherShareId';
+
+    const cancelShareStub = sinon.stub().resolves({ changed: false, state: 'canceled' });
+    const coinStub = sinon.createStubInstance(BaseCoin, {
+      wallets: sinon.stub<[], Wallets>().returns({
+        cancelShare: cancelShareStub,
+      } as any),
+    });
+
+    const stubBitgo = sinon.createStubInstance(BitGo, { coin: sinon.stub<[string]>().returns(coinStub) });
+
+    const req = {
+      bitgo: stubBitgo,
+      decoded: {
+        coin,
+        id: shareId,
+      },
+    } as unknown as ExpressApiRouteRequest<'express.wallet.cancelShare', 'delete'>;
+
+    await handleV2CancelWalletShare(req);
+
+    cancelShareStub.calledOnceWith({ walletShareId: shareId }).should.be.true();
+  });
+});