School of Japanese Buddhism founded by Saicho, Dengyo daishi in the 800s. Very loosely based on the Chinese Tiantai school of Zhihyi. Using the Lotus sutra for inspiration, it presents an integrated yet syncretic approach to Dharma. Techniques range from Mikkyo to Pure Land to samatha and vipashyana.

Historically, all of the major movements in Japanese Buddhism that flourished in the Kamakura era originated with Teachers who were originally Tendai monks. For example, Dogen zenji, Honen, Shinran and so on all originally trained on Hiei-san.