diff --git a/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.test.ts b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.test.ts
new file mode 100644
index 00000000000..bb56822e70d
--- /dev/null
+++ b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.test.ts
@@ -0,0 +1,95 @@
+import { beforeEach, describe, expect, it, mock } from "bun:test";
+import type { AlertOptions } from "@superset/ui/atoms/Alert";
+
+let suppressed = false;
+const suppress = mock(() => {
+	suppressed = true;
+});
+
+mock.module("renderer/stores/terminal-close-confirm/store", () => ({
+	useTerminalCloseConfirmStore: {
+		getState: () => ({ suppressed, suppress }),
+	},
+}));
+
+const { confirmClosePorts } = await import("./confirmClosePorts");
+
+describe("confirmClosePorts", () => {
+	beforeEach(() => {
+		suppressed = false;
+		suppress.mockClear();
+	});
+
+	it("confirms a single port with running-process copy", async () => {
+		let options: AlertOptions | undefined;
+		const showAlert = mock((nextOptions: AlertOptions) => {
+			options = nextOptions;
+			return true;
+		});
+
+		const confirmation = confirmClosePorts(1, showAlert);
+
+		expect(options?.title).toBe("This port is still in use");
+		expect(options?.description).toBe(
+			"Closing this port will end the process using it.",
+		);
+		expect(options?.actions[0]?.label).toBe("Close port");
+
+		await options?.actions[0]?.onClick?.({ checkboxChecked: false });
+		expect(await confirmation).toBe(true);
+	});
+
+	it("uses plural copy and resolves false when canceled", async () => {
+		let options: AlertOptions | undefined;
+		const showAlert = (nextOptions: AlertOptions) => {
+			options = nextOptions;
+			return true;
+		};
+
+		const confirmation = confirmClosePorts(2, showAlert);
+
+		expect(options?.title).toBe("These ports are still in use");
+		expect(options?.description).toBe(
+			"Closing these ports will end the processes using them.",
+		);
+		expect(options?.actions[0]?.label).toBe("Close ports");
+
+		await options?.actions[1]?.onClick?.({ checkboxChecked: false });
+		expect(await confirmation).toBe(false);
+	});
+
+	it("resolves false when the dialog is dismissed", async () => {
+		let options: AlertOptions | undefined;
+		const confirmation = confirmClosePorts(1, (nextOptions) => {
+			options = nextOptions;
+			return true;
+		});
+
+		options?.onDismiss?.();
+
+		expect(await confirmation).toBe(false);
+	});
+
+	it("persists the shared running-process suppression preference", async () => {
+		let options: AlertOptions | undefined;
+		const showAlert = mock((nextOptions: AlertOptions) => {
+			options = nextOptions;
+			return true;
+		});
+		const confirmation = confirmClosePorts(1, showAlert);
+
+		await options?.actions[0]?.onClick?.({
+			checkboxChecked: true,
+		});
+		expect(await confirmation).toBe(true);
+		expect(suppressed).toBe(true);
+		expect(suppress).toHaveBeenCalledTimes(1);
+
+		expect(await confirmClosePorts(1, showAlert)).toBe(true);
+		expect(showAlert).toHaveBeenCalledTimes(1);
+	});
+
+	it("fails open when the alert layer is unavailable", async () => {
+		expect(await confirmClosePorts(1, () => false)).toBe(true);
+	});
+});
diff --git a/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.ts b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.ts
new file mode 100644
index 00000000000..d3074d0bbf3
--- /dev/null
+++ b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/confirmClosePorts.ts
@@ -0,0 +1,50 @@
+import { type AlertOptions, alert } from "@superset/ui/atoms/Alert";
+import { useTerminalCloseConfirmStore } from "renderer/stores/terminal-close-confirm/store";
+
+type ShowAlert = (options: AlertOptions) => boolean;
+
+/**
+ * Confirm before terminating the process or processes that own detected ports.
+ * This shares the running-process suppression preference with terminal close
+ * confirmations so "Don't ask again" behaves consistently.
+ */
+export function confirmClosePorts(
+	portCount: number,
+	showAlert: ShowAlert = alert,
+): Promise<boolean> {
+	if (portCount === 0 || useTerminalCloseConfirmStore.getState().suppressed) {
+		return Promise.resolve(true);
+	}
+
+	const isSinglePort = portCount === 1;
+
+	return new Promise<boolean>((resolve) => {
+		const shown = showAlert({
+			title: isSinglePort
+				? "This port is still in use"
+				: "These ports are still in use",
+			description: isSinglePort
+				? "Closing this port will end the process using it."
+				: "Closing these ports will end the processes using them.",
+			checkbox: { label: "Don't ask again" },
+			onDismiss: () => resolve(false),
+			actions: [
+				{
+					label: isSinglePort ? "Close port" : "Close ports",
+					variant: "destructive",
+					onClick: ({ checkboxChecked }) => {
+						if (checkboxChecked) {
+							useTerminalCloseConfirmStore.getState().suppress();
+						}
+						resolve(true);
+					},
+				},
+				{ label: "Cancel", variant: "ghost", onClick: () => resolve(false) },
+			],
+		});
+
+		// Match terminal-close behavior: never leave the action hanging if the
+		// global alert layer is unavailable.
+		if (!shown) resolve(true);
+	});
+}
diff --git a/apps/desktop/src/renderer/hooks/ports/usePortKillActions/usePortKillActions.ts b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/usePortKillActions.ts
index 8877610c53b..a4d48b069b9 100644
--- a/apps/desktop/src/renderer/hooks/ports/usePortKillActions/usePortKillActions.ts
+++ b/apps/desktop/src/renderer/hooks/ports/usePortKillActions/usePortKillActions.ts
@@ -1,6 +1,7 @@
 import { toast } from "@superset/ui/sonner";
 import { type QueryKey, useQueryClient } from "@tanstack/react-query";
 import { useCallback, useState } from "react";
+import { confirmClosePorts } from "./confirmClosePorts";
 import {
 	killPortTarget,
 	type LocalPortKill,
@@ -36,7 +37,9 @@ export function usePortKillActions<TPort extends PortKillTarget>({
 	}, [queryClient, refreshQueryKey]);
 
 	const killPort = useCallback(
-		async (port: TPort): Promise<PortKillResult> => {
+		async (port: TPort): Promise<PortKillResult | undefined> => {
+			if (!(await confirmClosePorts(1))) return;
+
 			setPendingCount((count) => count + 1);
 			try {
 				const result = await killPortTarget(port, localKill);
@@ -57,6 +60,7 @@ export function usePortKillActions<TPort extends PortKillTarget>({
 	const killPorts = useCallback(
 		async (ports: TPort[]): Promise<PortKillResult[]> => {
 			if (ports.length === 0) return [];
+			if (!(await confirmClosePorts(ports.length))) return [];
 
 			setPendingCount((count) => count + 1);
 			try {