Tokyo Camii, also known as Tokyo Mosque, is a mosque with an adjoining Turkish culture center located in the Ōyama-chō district of Shibuya ward in Tokyo, Japan. It is the largest mosque in Japan. The mosque was originally built along with an adjoining school in 1938 by Bashkir and Tatar immigrants from Russia who had come to Japan after the October Revolution.
In 1986, the mosque had to be demolished because of severe structural damage. Under the direction and support of Diyanet İşleri Başkanlığı a new building was begun in 1998. The architect for the building was Muharrem Hilmi Senalp. The ornamentation was based on Ottoman religious architecture. Around 70 Turkish craftsmen performed the finishing details, and a considerable quantity of marble was imported from Turkey. The construction was completed in 2000 at a cost of around 1.5 billion yen.
Tokyo Camii is 734 square meters in area and has one basement floor and three above-ground floors with a total floor area of 1,477 square meters. Its main dome is 23.25 meters tall and is supported by six pillars, while the adjacent minaret is 41.48 meters tall. For Friday pray, there are 3 languages used: Turkish, English and Japanese.