The Baitul Ahad is a mosque in Japan accommodating up to 800 worshippers. The mosque lies on a main road in Nagoya with transport links, accommodation facilities, offices and a library. Hazrat Mirza Masroor Ahmad (aa) inaugurated the Bait-ul-Ahad Mosque on 20 November 2015. This mosque is now the largest mosque in Japan’s Hirumacho region.