diff --git a/scripts/run-vitest.mjs b/scripts/run-vitest.mjs
index f06537dabb1..ef656d309b3 100644
--- a/scripts/run-vitest.mjs
+++ b/scripts/run-vitest.mjs
@@ -59,6 +59,8 @@ export function installVitestNoOutputWatchdog(params) {
   const clearTimeoutFn = params.clearTimeoutFn ?? clearTimeout;
   const forceKillAfterMs = params.forceKillAfterMs ?? 5_000;
   const streams = params.streams?.filter(Boolean) ?? [];
+  const label = params.label?.trim();
+  const suffix = label ? ` (${label})` : "";
 
   let active = true;
   let silenceTimer = null;
@@ -88,7 +90,7 @@ export function installVitestNoOutputWatchdog(params) {
         return;
       }
       params.log?.(
-        `[vitest] no output for ${timeoutMs}ms; terminating stalled Vitest process group.`,
+        `[vitest] no output for ${timeoutMs}ms; terminating stalled Vitest process group${suffix}.`,
       );
       params.onTimeout?.();
       if (forceKillAfterMs > 0) {
@@ -98,7 +100,7 @@ export function installVitestNoOutputWatchdog(params) {
             return;
           }
           params.log?.(
-            `[vitest] process group still alive after ${forceKillAfterMs}ms; sending SIGKILL.`,
+            `[vitest] process group still alive after ${forceKillAfterMs}ms; sending SIGKILL${suffix}.`,
           );
           params.onForceKill?.();
         }, forceKillAfterMs);
@@ -177,6 +179,7 @@ function main(argv = process.argv.slice(2), env = process.env) {
   const teardownNoOutputWatchdog = installVitestNoOutputWatchdog({
     streams: [child.stdout, child.stderr],
     timeoutMs: resolveVitestNoOutputTimeoutMs(env),
+    label: argv.join(" "),
     log: (message) => {
       console.error(message);
     },
diff --git a/scripts/test-projects.mjs b/scripts/test-projects.mjs
index 9378276738d..618d1bff34a 100644
--- a/scripts/test-projects.mjs
+++ b/scripts/test-projects.mjs
@@ -120,6 +120,7 @@ function runVitestSpec(spec) {
     const teardownNoOutputWatchdog = installVitestNoOutputWatchdog({
       streams: [child.stdout, child.stderr],
       timeoutMs: resolveVitestNoOutputTimeoutMs(spec.env),
+      label: spec.config,
       log: (message) => {
         console.error(message);
       },
diff --git a/test/scripts/run-vitest.test.ts b/test/scripts/run-vitest.test.ts
index fcbcf26fb82..34fb425232b 100644
--- a/test/scripts/run-vitest.test.ts
+++ b/test/scripts/run-vitest.test.ts
@@ -97,4 +97,28 @@ describe("scripts/run-vitest", () => {
       vi.useRealTimers();
     }
   });
+
+  it("includes the runner label in watchdog logs when provided", () => {
+    vi.useFakeTimers();
+    try {
+      const stdout = new EventEmitter();
+      const logSpy = vi.fn();
+
+      installVitestNoOutputWatchdog({
+        streams: [stdout],
+        timeoutMs: 1000,
+        forceKillAfterMs: 0,
+        label: "run --config test/vitest/vitest.secrets.config.ts",
+        log: logSpy,
+        onTimeout: () => {},
+      });
+
+      vi.advanceTimersByTime(1000);
+      expect(logSpy).toHaveBeenCalledWith(
+        "[vitest] no output for 1000ms; terminating stalled Vitest process group (run --config test/vitest/vitest.secrets.config.ts).",
+      );
+    } finally {
+      vi.useRealTimers();
+    }
+  });
 });