Yūkoku-ji, Buddhist temple in Kumagaya, Japan.

Yūkoku-ji is a Jōdo-shū temple in Nakamachi, Kumagaya, with the mountain name Renseizan. It stands at the end of a narrow city street between the Yagihashi department store and the Saitama Shinkin Bank head office, just north of the Kamakura-chō intersection on National Route 17. The temple is basically closed at all times, and entry to the precincts is not allowed except during special events or with special permission.

The temple was built in 1591 by the monk Hanyui Byakudō Shōnin on the site of an hermitage linked to Kumagai Naozane, the late-Heian and early-Kamakura warrior who took vows around 1193 as Hōriki-bō Renshō and taught monks and laypeople from a hut within Kumagaya Manor. In 1595, when the Nakasendō was rerouted, the road that had run behind the temple's north side was moved to its present course on the south, cutting the temple off from the old manor's moat enclosure.

The temple is dedicated to the Pure Land school and is normally closed to visitors; entry to the grounds is allowed only during special events or with permission. Its name is read Yūkoku-ji, and the temple keeps the grave of Hōrihō Renshō, the monk name of Kumagai Naozane, in its cemetery.

The temple is normally closed to visitors; entry to the grounds is not allowed except during special events or with special permission. It stands at the end of a city street between the Yagihashi department store and the Saitama Shinkin Bank head office, north of the Kamakura-chō intersection on National Route 17. From Kumagaya Station take a Kokusai Jūō or Asahi bus about 5 minutes to the Yūkoku-ji-mae stop, or walk 15 minutes; from Kami-Kumagaya Station on the Chichibu Railway it is a 7-minute walk.

The temple holds a special connection to Kumagai Naozane, a samurai who abandoned his warrior life to become a Buddhist monk. This transformation deeply influenced the temple's spiritual identity and continues to shape its character.