豊顕寺, Buddhist temple in Kanagawa-ku, Japan.

Toyokenji is a Hokke-shu Jimmon-ryu temple on the slopes of Mitsuzawa in Kanagawa-ku, founded in 1515 and moved here under its present name by the Domi family, retainers of the Later Hojo. Its precinct once covered 52,000 tsubo and held the Mitsuzawa Danrin, a seminary with five study halls and 25 dormitories for over 300 students.

The temple was founded in 1515 in Mikawa Province as Honkenji by Dome Shumori Motooki, a member of the Dome clan, for the memorial of his father Motomasu, who cooperated with Hojo Soun. It later moved to Mitsuzawa in Musashi Province and was renamed Hoshoyama Bugenji. In 1720 it received shogunate permission to establish the Mitsuzawa Danrin, a seminary that at its peak had 5 study halls, 25 dormitories and over 300 students. The danrin was abolished after a Meiji-era fire and the 1923 Great Kanto Earthquake.

The temple belongs to the Hokke-shū Jinmon-ryū school, and its name was changed from Honken-ji to Hōken-ji when the Domi family moved it to Mitsuzawa. The temple once hosted the Mitsuzawa Danrin, a study centre for monks, and its grounds were known for double-flowered cherries; a saying urged people to wait for the blossom viewing at Hōken-ji before quarrelling.

The temple stands at 16-1 Mitsuzawa-Nishimachi, Kanagawa-ku, Yokohama, about 2 km from Yokohama Station; the nearest subway stop is Mitsuzawa-Kamicho on the Blue Line. Drivers reach it from the Hodogaya interchange of the Daisan Keihin, the Kanagawa No. 2 Mitsuzawa route and the Yokohama Shindo. The precinct once covered 52,000 tsubo, so allow time to walk the grounds.

In its peak period the Mitsuzawa Danrin study centre here had five lecture halls and 25 dormitories, with more than 300 students. The temple grounds once covered 52,000 tsubo, and the double-flowered cherries were so celebrated that a local saying urged quarrellers to wait for the blossom viewing at Bugenji.