diff --git a/testing/android/native_activity/native_activity_apk.py b/testing/android/native_activity/native_activity_apk.py
index 2286d868799b9..61e8141e6c3ad 100644
--- a/testing/android/native_activity/native_activity_apk.py
+++ b/testing/android/native_activity/native_activity_apk.py
@@ -110,6 +110,10 @@ def main():
   ]
   run_command_checked(apksigner_command, env=env)
 
+  # Remove the intermediates so the out directory isn't full of large files.
+  os.remove(unaligned_apk_path)
+  os.remove(unsigned_apk_path)
+
   return 0