diff --git a/src/features/team-mode/team-layout-tmux/close-team-member-pane.test.ts b/src/features/team-mode/team-layout-tmux/close-team-member-pane.test.ts
new file mode 100644
index 000000000..7a13f960f
--- /dev/null
+++ b/src/features/team-mode/team-layout-tmux/close-team-member-pane.test.ts
@@ -0,0 +1,62 @@
+/// <reference types="bun-types" />
+
+import { afterEach, beforeEach, describe, expect, test, mock, spyOn } from "bun:test"
+
+import * as sharedModule from "../../../shared"
+import * as sharedTmuxModule from "../../../shared/tmux"
+import { closeTeamMemberPane } from "./close-team-member-pane"
+
+const closeTmuxPaneMock = mock(async (): Promise<boolean> => true)
+const logMock = mock(() => undefined)
+
+describe("closeTeamMemberPane", () => {
+	afterEach(() => {
+		mock.restore()
+	})
+
+	beforeEach(() => {
+		closeTmuxPaneMock.mockClear()
+		logMock.mockClear()
+
+		closeTmuxPaneMock.mockResolvedValue(true)
+		spyOn(sharedModule, "log").mockImplementation(logMock)
+		spyOn(sharedTmuxModule, "closeTmuxPane").mockImplementation(closeTmuxPaneMock)
+	})
+
+	test("#given member has both tmuxPaneId and tmuxGridPaneId #when closeTeamMemberPane runs #then close is invoked for both ids (2 calls) and returns true when either succeeds", async () => {
+		// given
+		closeTmuxPaneMock.mockResolvedValueOnce(false)
+		closeTmuxPaneMock.mockResolvedValueOnce(true)
+
+		// when
+		const result = await closeTeamMemberPane({ tmuxPaneId: "%42", tmuxGridPaneId: "%84" })
+
+		// then
+		expect(result).toBe(true)
+		expect(closeTmuxPaneMock).toHaveBeenCalledTimes(2)
+		expect(closeTmuxPaneMock).toHaveBeenCalledWith("%42")
+		expect(closeTmuxPaneMock).toHaveBeenCalledWith("%84")
+	})
+
+	test("#given member has only tmuxPaneId #when closeTeamMemberPane runs #then close is invoked once and returns true when it succeeds", async () => {
+		// when
+		const result = await closeTeamMemberPane({ tmuxPaneId: "%42" })
+
+		// then
+		expect(result).toBe(true)
+		expect(closeTmuxPaneMock).toHaveBeenCalledTimes(1)
+		expect(closeTmuxPaneMock).toHaveBeenCalledWith("%42")
+	})
+
+	test("#given both closes fail #when closeTeamMemberPane runs #then returns false", async () => {
+		// given
+		closeTmuxPaneMock.mockResolvedValue(false)
+
+		// when
+		const result = await closeTeamMemberPane({ tmuxPaneId: "%42", tmuxGridPaneId: "%84" })
+
+		// then
+		expect(result).toBe(false)
+		expect(closeTmuxPaneMock).toHaveBeenCalledTimes(2)
+	})
+})
diff --git a/src/features/team-mode/team-layout-tmux/close-team-member-pane.ts b/src/features/team-mode/team-layout-tmux/close-team-member-pane.ts
new file mode 100644
index 000000000..83a3b8cb6
--- /dev/null
+++ b/src/features/team-mode/team-layout-tmux/close-team-member-pane.ts
@@ -0,0 +1,31 @@
+/// <reference types="bun-types" />
+
+import type { RuntimeStateMember } from "../types"
+
+type TeamMemberPaneIds = Pick<RuntimeStateMember, "tmuxPaneId" | "tmuxGridPaneId">
+
+export async function closeTeamMemberPane(member: TeamMemberPaneIds): Promise<boolean> {
+	const paneIds = [member.tmuxPaneId, member.tmuxGridPaneId].filter((paneId): paneId is string => paneId !== undefined && paneId.length > 0)
+	if (paneIds.length === 0) {
+		return false
+	}
+
+	const [{ log }, { closeTmuxPane }] = await Promise.all([
+		import("../../../shared"),
+		import("../../../shared/tmux"),
+	])
+
+	const results = await Promise.all(paneIds.map(async (paneId) => {
+		try {
+			return await closeTmuxPane(paneId)
+		} catch (error) {
+			log("[closeTeamMemberPane] FAILED", {
+				paneId,
+				error: error instanceof Error ? error.message : String(error),
+			})
+			return false
+		}
+	}))
+
+	return results.some(Boolean)
+}