Tōzen-ji, Buddhist temple in Asahi, Chiba, Japan.

Tōzen-ji is a Shingon Chizan school temple in Asahi, Chiba Prefecture, founded in 1593. Its mountain name is Dennyuzan and its honorary name is Saitoku-in. The main image is Aizen Myōō, and an outside Kannon hall houses an Eleven-Faced Kannon.

Tōzen-ji was founded in 1593 by Kiso Yoshimasa, lord of a 10,000-koku domain at Agito in Shimōsa Province, who invited the priest Etsudō from the Kiso valley to serve as founding abbot. It belongs to the Chizan school of Shingon Buddhism, is named Tendokuzan Shitokuin, and venerates Aizen Myōō as its principal image.

Tōzen-ji belongs to the Chizan branch of Shingon Buddhism, not to a Zen school. Its main image is Aizen Myōō, a red-skinned deity of esoteric Buddhism, and the temple carries the name Dentyokuzan Saitoku-in. The Kannon hall outside the precincts enshrines an Eleven-faced Kannon said to have been the protective image of Marihime, daughter of Takeda Shingen and wife of Kiso Yoshimasa.

Tōzen-ji stands in Asahi, Chiba Prefecture, and belongs to the Chizan branch of Shingon Buddhism; its mountain name is Dendōzan and its honorary name Saidō-in. The temple's main object of worship is Aizen Myōō. The Kannondō outside the temple grounds houses an Eleven-Faced Kannon statue said to have been the protective image of Marihime, daughter of Takeda Shingen and wife of Kiso Yoshimasa.

The temple's kannon-dō stands outside the main precinct and enshrines an eleven-faced Kannon statue said to have been the protective image of Mari-hime, daughter of Takeda Shingen and wife of the founder Kiso Yoshimasa. The temple also keeps a hanging Buddha relief (kakebotoke) and relics of Kiso Yoshimasa, both designated city cultural properties.