AEW X NJPW: Forbidden Door: London

The 2025 Forbidden Door was a professional wrestling pay-per-view (PPV) event and supershow co-produced by the American promotion All Elite Wrestling (AEW) and the Japan-based New Japan Pro-Wrestling (NJPW). It was the fourth annual Forbidden Door event and took place on August 24, 2025 at The O2 in London, England.