Kansen-ji Temple, Buddhist temple in Suginami, Japan.

Kansenji is a Soto Zen temple in Imagawa, Suginami, founded in 1597 and moved to its present site by Imagawa Naofusa in the 1640s. Its gate has a broad grey-tiled roof with upturned eaves, a dark wooden bracket structure and three bays: a central open passage flanked by two closed dark wooden doors. Low white walls with dark tiled coping run to either side, and wide stone steps lead up to the passage behind a low light-grey fence of vertical bars.

The Soto Zen priest Tessō Yūsaku of Jōgan-ji in Nakano founded it in 1597 in Shimo-Igusa, Tama District, under the name Kannon-ji. In 1645 Imagawa Naofusa, lord of the area, moved it to its present site in Igusa village, built the temple buildings and renamed it Kansen-ji; the exact dates of the move and renaming are uncertain. In 1649 the shogunate granted it a vermilion-seal document exempting a 10-koku temple estate from taxes and duties. Its main hall burned in 1763 and was rebuilt in 1764.

The temple's name, Kansen-ji, was adopted when Imagawa Naofusa moved it here and rebuilt its halls. The Imagawa family, rulers of this area until the Meiji era, used the temple as a base for collecting taxes and holding trials at its gate. The temple also runs the adjacent Kansen-ji Kindergarten.

The temple is a 15-minute walk from Kami-Igusa Station on the Seibu Shinjuku Line, or reachable by bus from Ogikubo or Nishi-Ogikubo stations on the Chuo Line. It is open for viewing during daytime hours only, free of charge. The main hall, rebuilt in 1764 after a fire, stands beyond the stone steps and low fence seen at the entrance.

The Imagawa family graves at Kansen-ji are a Tokyo-designated historic site; the line includes Imagawa Ujizane, who died in Edo in 1614. His grandson Naofusa moved Ujizane's grave here in 1662 from Manmyo-in in Ichigaya-Tamachi and made him the temple's founding patron. The temple also runs the neighbouring Kansen-ji Kindergarten.