diff --git a/.changeset/soft-ties-turn.md b/.changeset/soft-ties-turn.md
new file mode 100644
index 00000000000..0f9393f1e8e
--- /dev/null
+++ b/.changeset/soft-ties-turn.md
@@ -0,0 +1,6 @@
+---
+"@trigger.dev/sdk": patch
+"@trigger.dev/core": patch
+---
+
+implement functionality to cancel job runs triggered by a given eventId.
diff --git a/apps/webapp/app/routes/api.v1.events.$eventId.cancel-runs.ts b/apps/webapp/app/routes/api.v1.events.$eventId.cancel-runs.ts
new file mode 100644
index 00000000000..ad47ab18360
--- /dev/null
+++ b/apps/webapp/app/routes/api.v1.events.$eventId.cancel-runs.ts
@@ -0,0 +1,49 @@
+import type { ActionArgs } from "@remix-run/server-runtime";
+import { json } from "@remix-run/server-runtime";
+import { z } from "zod";
+import { authenticateApiRequest } from "~/services/apiAuth.server";
+import { CancelEventService } from "~/services/events/cancelEvent.server";
+import { logger } from "~/services/logger.server";
+import { CancelRunsForEventService } from "~/services/events/cancelRunsForEvent.server";
+
+const ParamsSchema = z.object({
+  eventId: z.string(),
+});
+
+export async function action({ request, params }: ActionArgs) {
+  // Ensure this is a POST request
+  if (request.method.toUpperCase() !== "POST") {
+    return { status: 405, body: "Method Not Allowed" };
+  }
+
+  // Next authenticate the request
+  const authenticationResult = await authenticateApiRequest(request);
+
+  if (!authenticationResult) {
+    return json({ error: "Invalid or Missing API key" }, { status: 401 });
+  }
+
+  const authenticatedEnv = authenticationResult.environment;
+
+  const parsed = ParamsSchema.safeParse(params);
+
+  if (!parsed.success) {
+    return json({ error: "Invalid or Missing eventId" }, { status: 400 });
+  }
+
+  const { eventId } = parsed.data;
+
+  const service = new CancelRunsForEventService();
+  try {
+    const res = await service.call(authenticatedEnv, eventId);
+
+    if (!res) {
+      return json({ error: "Event not found" }, { status: 404 });
+    }
+
+    return json(res);
+  } catch (err) {
+    logger.error("CancelRunsForEventService.call() error", { error: err });
+    return json({ error: "Internal Server Error" }, { status: 500 });
+  }
+}
diff --git a/apps/webapp/app/services/events/cancelRunsForEvent.server.ts b/apps/webapp/app/services/events/cancelRunsForEvent.server.ts
new file mode 100644
index 00000000000..8d479b47fed
--- /dev/null
+++ b/apps/webapp/app/services/events/cancelRunsForEvent.server.ts
@@ -0,0 +1,70 @@
+import { $transaction, PrismaClient, prisma } from "~/db.server";
+import { AuthenticatedEnvironment } from "../apiAuth.server";
+import { JobRunStatus } from "@trigger.dev/database";
+import { CancelRunService } from "../runs/cancelRun.server";
+import { logger } from "../logger.server";
+import { CancelRunsForEvent } from "@trigger.dev/core/schemas/events";
+
+const CANCELLABLE_JOB_RUN_STATUS: JobRunStatus[] = [
+  JobRunStatus.PENDING,
+  JobRunStatus.QUEUED,
+  JobRunStatus.WAITING_ON_CONNECTIONS,
+  JobRunStatus.PREPROCESSING,
+  JobRunStatus.STARTED,
+];
+
+export class CancelRunsForEventService {
+  #prismaClient: PrismaClient;
+
+  constructor(prismaClient: PrismaClient = prisma) {
+    this.#prismaClient = prismaClient;
+  }
+
+  public async call(environment: AuthenticatedEnvironment, eventId: string) {
+    return await $transaction<CancelRunsForEvent | undefined>(this.#prismaClient, async (tx) => {
+      const event = await tx.eventRecord.findUnique({
+        where: {
+          eventId_environmentId: {
+            eventId: eventId,
+            environmentId: environment.id,
+          },
+        },
+      });
+
+      if (!event) {
+        return;
+      }
+
+      const jobRuns = await tx.jobRun.findMany({
+        where: {
+          eventId: event.id,
+          status: {
+            in: CANCELLABLE_JOB_RUN_STATUS,
+          },
+        },
+        select: {
+          id: true,
+        },
+      });
+
+      const cancelRunService = new CancelRunService(this.#prismaClient);
+      const cancelledRunIds: string[] = [];
+      const failedToCancelRunIds: string[] = [];
+
+      for (const jobRun of jobRuns) {
+        try {
+          await cancelRunService.call({ runId: jobRun.id });
+          cancelledRunIds.push(jobRun.id);
+        } catch (err) {
+          logger.debug(`failed to cancel job run with id ${jobRun.id} for event id ${eventId}`);
+          failedToCancelRunIds.push(jobRun.id);
+        }
+      }
+
+      return {
+        cancelled_run_ids: cancelledRunIds,
+        failed_to_cancel_run_ids: failedToCancelRunIds,
+      };
+    });
+  }
+}
diff --git a/docs/mint.json b/docs/mint.json
index 58228c57e05..ef5e50bcad0 100644
--- a/docs/mint.json
+++ b/docs/mint.json
@@ -312,6 +312,7 @@
                 "sdk/triggerclient/instancemethods/sendevent",
                 "sdk/triggerclient/instancemethods/getevent",
                 "sdk/triggerclient/instancemethods/cancel-event",
+                "sdk/triggerclient/instancemethods/cancel-runs-for-event",
                 "sdk/triggerclient/instancemethods/getruns",
                 "sdk/triggerclient/instancemethods/getrun",
                 "sdk/triggerclient/instancemethods/define-job",
diff --git a/docs/sdk/triggerclient/instancemethods/cancel-runs-for-event.mdx b/docs/sdk/triggerclient/instancemethods/cancel-runs-for-event.mdx
new file mode 100644
index 00000000000..0e56015ef28
--- /dev/null
+++ b/docs/sdk/triggerclient/instancemethods/cancel-runs-for-event.mdx
@@ -0,0 +1,41 @@
+---
+title: "TriggerClient: cancelRunsForEvent() Instance Method"
+sidebarTitle: "cancelRunsForEvent()"
+description: "The `cancelRunsForEvent()` instance method will cancel all the job runs (yet to be executed) that are triggered by a given eventId."
+---
+
+## Parameters
+
+<ResponseField name="eventId" type="string" required>
+  The event ID to cancel the job runs for. This is returned when calling either
+  [client.sendEvent()](/sdk/triggerclient/instancemethods/sendevent) or
+  [io.sendEvent()](/sdk/io/sendevent).
+</ResponseField>
+
+## Returns
+
+<ResponseField type="object">
+  <Expandable title="properties" defaultOpen>
+    <ResponseField name="cancelled_run_ids" type="array" required>
+      List of Job Run IDs that are cancelled.
+    </ResponseField>
+    <ResponseField name="failed_to_cancel_run_ids" type="array" required>
+      List of Job Run IDs that have failed to be cancelled.
+    </ResponseField>
+  </Expandable>
+</ResponseField>
+
+<RequestExample>
+
+```ts Cancelling Runs for an Event
+const event = client.sendEvent({
+  name: "test.job",
+});
+
+const res = client.cancelRunsForEvent(event.id);
+
+console.log(res.cancelled_run_ids);
+console.log(res.failed_to_cancel_run_ids);
+```
+
+</RequestExample>
diff --git a/docs/sdk/triggerclient/overview.mdx b/docs/sdk/triggerclient/overview.mdx
index 44b9e331194..f57cb50dd82 100644
--- a/docs/sdk/triggerclient/overview.mdx
+++ b/docs/sdk/triggerclient/overview.mdx
@@ -46,6 +46,10 @@ The `getEvent()` method gets the event details for a given eventId.
 
 The `cancelEvent()` method cancels an event that is scheduled to be delivered in the future.
 
+#### [cancelRunsForEvent()](/sdk/triggerclient/instancemethods/cancel-runs-for-event)
+
+The `cancelRunsForEvent()` method cancels the job runs (yet to be executed) that are triggered by a given eventId.
+
 #### [getRuns()](/sdk/triggerclient/instancemethods/getruns)
 
 The `getRuns()` method gets runs for a Job.
diff --git a/packages/core/src/schemas/events.ts b/packages/core/src/schemas/events.ts
index f7c980b6d30..4f5a0e8d8f9 100644
--- a/packages/core/src/schemas/events.ts
+++ b/packages/core/src/schemas/events.ts
@@ -26,3 +26,10 @@ export const GetEventSchema = z.object({
 });
 
 export type GetEvent = z.infer<typeof GetEventSchema>;
+
+export const CancelRunsForEventSchema = z.object({
+  cancelled_run_ids: z.array(z.string()),
+  failed_to_cancel_run_ids: z.array(z.string()),
+});
+
+export type CancelRunsForEvent = z.infer<typeof CancelRunsForEventSchema>;
diff --git a/packages/trigger-sdk/src/apiClient.ts b/packages/trigger-sdk/src/apiClient.ts
index 2f0efc2e7d5..f46f3384dd1 100644
--- a/packages/trigger-sdk/src/apiClient.ts
+++ b/packages/trigger-sdk/src/apiClient.ts
@@ -1,6 +1,7 @@
 import {
   ApiEventLog,
   ApiEventLogSchema,
+  CancelRunsForEventSchema,
   CompleteTaskBodyInput,
   ConnectionAuthSchema,
   FailTaskBodyInput,
@@ -215,6 +216,26 @@ export class ApiClient {
     });
   }
 
+  async cancelRunsForEvent(eventId: string) {
+    const apiKey = await this.#apiKey();
+
+    this.#logger.debug("Cancelling runs for event", {
+      eventId,
+    });
+
+    return await zodfetch(
+      CancelRunsForEventSchema,
+      `${this.#apiUrl}/api/v1/events/${eventId}/cancel-runs`,
+      {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${apiKey}`,
+        },
+      }
+    );
+  }
+
   async updateStatus(runId: string, id: string, status: StatusUpdate) {
     const apiKey = await this.#apiKey();
 
diff --git a/packages/trigger-sdk/src/triggerClient.ts b/packages/trigger-sdk/src/triggerClient.ts
index bbb5e8b21be..4743dd2ccfc 100644
--- a/packages/trigger-sdk/src/triggerClient.ts
+++ b/packages/trigger-sdk/src/triggerClient.ts
@@ -644,6 +644,10 @@ export class TriggerClient {
     return this.#client.cancelEvent(eventId);
   }
 
+  async cancelRunsForEvent(eventId: string) {
+    return this.#client.cancelRunsForEvent(eventId);
+  }
+
   async updateStatus(runId: string, id: string, status: StatusUpdate) {
     return this.#client.updateStatus(runId, id, status);
   }