Kōtō-in, Buddhist subtemple in Kita-ku, Japan.

Kōtō-in is a sub-temple of Daitoku-ji in Kyoto, founded in 1602 by Hosokawa Tadaoki for his father Hosokawa Fujitaka. Its main hall, rebuilt in the Taishō period by Marquis Hosokawa Moritatsu, faces the Maple Garden: a flat expanse of moss with a few maples and a Kamakura-period stone lantern at its centre. The grounds also hold the tea houses Shōkō-ken and Shōkō-ken's predecessor, and the study I-hoku-ken, said to have been moved from Sen no Rikyū's residence.

Hosokawa Tadaoki (Sansai) founded Kōtō-in in 1602 for his father, Hosokawa Fujitaka (Yūsai), with Tamao Shōsō, Yūsai's younger brother, as founding abbot. Tadaoki died in 1645 at 83, and per his will his remaining tooth was buried here; the temple then served as the Hosokawa family's burial temple. The main hall was destroyed in the Meiji-era persecution of Buddhism and rebuilt in the Taishō era by Marquis Hosokawa Moritatsu.

The temple is named Kōtō-in, and its grounds hold the grave of Izumo no Okuni, the woman credited with founding kabuki. Her tomb stands among those of the Hosokawa family and their retainers, including the tea master Kobori Enshū's associate, the monk Seigan Sōi. Visitors can also see the Shōkō-ken teahouse, linked to Hosokawa Tadaoki's tea practice.

Kōtō-in lies in Murasakino Daitokuji-chō, Kita-ku, reached from JR Kyoto Station by city bus to the Kenkun-jinja-mae stop (about 30 minutes), then roughly three minutes on foot. The approach is through the Daitoku-ji precinct, so allow time to walk between the sub-temple gates.

The temple grounds hold the graves of both its military founder and Izumo no Okuni, who created kabuki theater. This unexpected pairing links the world of samurai and warfare with the birth of Japan's most famous theatrical form.