diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fe0189e..bab4dccb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,7 +35,9 @@ and this project adheres to
   is checked in `fromAmino` now instead of the constructor. This only affects
   you if multiple different protobuf type URLs map to the same Amino type
   identifier which should not be the case anyways.
+- @cosmjs/stargate: Added support for slashing queries ([#927])
 
+[#927]: https://github.com/cosmos/cosmjs/issues/927
 [#989]: https://github.com/cosmos/cosmjs/issues/989
 [#994]: https://github.com/cosmos/cosmjs/issues/994
 [#1011]: https://github.com/cosmos/cosmjs/issues/1011
diff --git a/packages/stargate/src/queries/index.ts b/packages/stargate/src/queries/index.ts
index f0cb2e77..aec76d76 100644
--- a/packages/stargate/src/queries/index.ts
+++ b/packages/stargate/src/queries/index.ts
@@ -10,6 +10,7 @@ export { DistributionExtension, setupDistributionExtension } from "./distributio
 export { GovExtension, GovParamsType, GovProposalId, setupGovExtension } from "./gov";
 export { IbcExtension, setupIbcExtension } from "./ibc";
 export { MintExtension, MintParams, setupMintExtension } from "./mint";
+export { setupSlashingExtension, SlashingExtension } from "./slashing";
 export { setupStakingExtension, StakingExtension } from "./staking";
 export { setupTxExtension, TxExtension } from "./tx";
 export {
diff --git a/packages/stargate/src/queries/slashing.spec.ts b/packages/stargate/src/queries/slashing.spec.ts
new file mode 100644
index 00000000..7d4b5867
--- /dev/null
+++ b/packages/stargate/src/queries/slashing.spec.ts
@@ -0,0 +1,41 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+import { Tendermint34Client } from "@cosmjs/tendermint-rpc";
+
+import { pendingWithoutSimapp, simapp } from "../testutils.spec";
+import { QueryClient } from "./queryclient";
+import { setupSlashingExtension, SlashingExtension } from "./slashing";
+
+async function makeClientWithSlashing(
+  rpcUrl: string,
+): Promise<[QueryClient & SlashingExtension, Tendermint34Client]> {
+  const tmClient = await Tendermint34Client.connect(rpcUrl);
+  return [QueryClient.withExtensions(tmClient, setupSlashingExtension), tmClient];
+}
+
+describe("SlashingExtension", () => {
+  describe("signingInfos", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithSlashing(simapp.tendermintUrl);
+
+      const response = await client.slashing.signingInfos();
+      expect(response.info).toBeDefined();
+      expect(response.info).not.toBeNull();
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("params", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithSlashing(simapp.tendermintUrl);
+
+      const response = await client.slashing.params();
+      expect(response.params).toBeDefined();
+      expect(response.params).not.toBeNull();
+
+      tmClient.disconnect();
+    });
+  });
+});
diff --git a/packages/stargate/src/queries/slashing.ts b/packages/stargate/src/queries/slashing.ts
new file mode 100644
index 00000000..496c20f7
--- /dev/null
+++ b/packages/stargate/src/queries/slashing.ts
@@ -0,0 +1,44 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+import {
+  QueryParamsResponse,
+  QuerySigningInfoResponse,
+  QuerySigningInfosResponse,
+} from "cosmjs-types/cosmos/slashing/v1beta1/query";
+import { QueryClientImpl } from "cosmjs-types/cosmos/slashing/v1beta1/query";
+
+import { QueryClient } from "./queryclient";
+import { createPagination, createProtobufRpcClient } from "./utils";
+
+export interface SlashingExtension {
+  readonly slashing: {
+    signingInfo: (consAddress: string) => Promise<QuerySigningInfoResponse>;
+    signingInfos: (paginationKey?: Uint8Array) => Promise<QuerySigningInfosResponse>;
+    params: () => Promise<QueryParamsResponse>;
+  };
+}
+
+export function setupSlashingExtension(base: QueryClient): SlashingExtension {
+  const rpc = createProtobufRpcClient(base);
+  const queryService = new QueryClientImpl(rpc);
+
+  return {
+    slashing: {
+      signingInfo: async (consAddress: string) => {
+        const response = await queryService.SigningInfo({
+          consAddress: consAddress,
+        });
+        return response;
+      },
+      signingInfos: async (paginationKey?: Uint8Array) => {
+        const response = await queryService.SigningInfos({
+          pagination: createPagination(paginationKey),
+        });
+        return response;
+      },
+      params: async () => {
+        const response = await queryService.Params({});
+        return response;
+      },
+    },
+  };
+}