Myōan Eisai/Yōsai (明菴栄西, May 27, 1141 – July 2, 1215) was a Japanese Buddhist priest, credited with bringing both the Rinzai school of Zen Buddhism and green tea from China to Japan. He is often known simply as Eisai/Yōsai Zenji (栄西禅師), literally "Zen master Eisai".