Ōtani-ha (真宗大谷派, Shinshū Ōtani-ha) is a Japanese Buddhist movement. It belongs to Jōdo Shinshū, also known as Shin Buddhism. The movement has approximately 5.5 million members.
The headquarters of Ōtani-ha are in Kyoto, the mother temple is Higashi Honganji. The historic Shōman-ji, Nagoya also belongs to it.
Otani University in Kyoto belongs to Ōtani-ha.