diff --git a/BUILD.gn b/BUILD.gn
index 8afb3b064e27..3a44e7aabcb7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -76,6 +76,7 @@ if (is_linux) {
       "notify_notification_set_timeout",
       "notify_notification_set_urgency",
       "notify_notification_set_hint_string",
+      "notify_notification_set_hint",
       "notify_notification_show",
       "notify_notification_close",
     ]
diff --git a/shell/browser/notifications/linux/libnotify_notification.cc b/shell/browser/notifications/linux/libnotify_notification.cc
index 4c8452fad1a8..4b6c6cf89776 100644
--- a/shell/browser/notifications/linux/libnotify_notification.cc
+++ b/shell/browser/notifications/linux/libnotify_notification.cc
@@ -10,6 +10,7 @@
 #include "base/files/file_enumerator.h"
 #include "base/functional/bind.h"
 #include "base/logging.h"
+#include "base/process/process_handle.h"
 #include "base/strings/utf_string_conversions.h"
 #include "shell/browser/notifications/notification_delegate.h"
 #include "shell/browser/ui/gtk_util.h"
@@ -145,6 +146,10 @@ void LibnotifyNotification::Show(const NotificationOptions& options) {
         notification_, "desktop-entry", desktop_id.c_str());
   }
 
+  libnotify_loader_.notify_notification_set_hint(
+      notification_, "sender-pid",
+      g_variant_new_int64(base::GetCurrentProcId()));
+
   GError* error = nullptr;
   libnotify_loader_.notify_notification_show(notification_, &error);
   if (error) {
diff --git a/spec/api-notification-dbus-spec.ts b/spec/api-notification-dbus-spec.ts
index 26e50e9bf3ae..2246cefb2dea 100644
--- a/spec/api-notification-dbus-spec.ts
+++ b/spec/api-notification-dbus-spec.ts
@@ -118,6 +118,7 @@ ifdescribe(!skip)('Notification module (dbus)', () => {
         hints: {
           append: 'true',
           'desktop-entry': appName,
+          'sender-pid': process.pid,
           urgency: 1
         }
       });