Ōtani-ha is a Japanese Buddhist movement. It belongs to the Jōdo Shinshū, sect also known as Shin Buddhism or True Pure Land. The movement has approximately 5.5 million members.

Kiyozawa Manshi was a Japanese Shin Buddhist thinker, academic and reformer of the Ōtani-ha branch. He is one of the most influential figures of Shin Buddhist modernism, known for his articulation of