Nishiyama Onsen Keiunkan

35°33′15.9″N 138°18′21.7″E / 35.554417°N 138.306028°E / 35.554417; 138.306028

Nishiyama Onsen Keiunkan
Native name
西山温泉慶雲館
Company typePrivate
IndustryHospitality industry
Founded705 (705) in Hayakawa, Japan
FounderFujiwara no Mahito
Key people
Kenjiro Kawano (president)
Services
OwnerNishiyama Onsen Keiunkan Limited
Websitekeiunkan.co.jp

Nishiyama Onsen Keiunkan (Japanese: 西山温泉慶雲館, lit.'Keiun-era Nishiyama Hot Spring') is an onsen ryokan (Japanese hot spring inn) in Yamanashi Prefecture. Founded in 705 by Fujiwara no Mahito, it is a prime example of shinise ("long-established business") and perhaps the oldest independent company in operation following the acquisition of construction company Kongō Gumi in 2006.

In 2011, the Keiunkan was recognized by Guinness World Records as the oldest hotel in the world despite the hotel facilities on site being only a few decades old.