AEW x NJPW: Forbidden Door

AEW x NJPW: Forbidden Door is a professional wrestling pay-per-view (PPV) event co-promoted by the American promotion All Elite Wrestling (AEW) and the Japanese promotion New Japan Pro-Wrestling (NJPW). Established in 2022, it is generally held annually in June, although it was held in August in 2025. The event features direct competition between wrestlers from both promotions, and its name comes from a term often used by AEW when working with other professional wrestling companies.

Beginning with the 2024 event, Forbidden Door has also featured wrestlers from NJPW's sister promotion World Wonder Ring Stardom and the Mexican promotion Consejo Mundial de Lucha Libre (CMLL). The 2025 event was the first to take place outside of North America as it was held in London, England and broke the attendance record for a professional wrestling event at The O2 Arena.