Dōgen Zenji, also known as Dōgen Kigen (道元希玄), Eihei Dōgen (永平道元), Kōso Jōyō Daishi (高祖承陽大師), or Busshō Dentō Kokushi (仏性伝東国師), was a Japanese Buddhist priest, writer, poet, philosopher, and founder of the Sōtō school of Zen in Japan.

Sōtō Zen or the Sōtō school is the largest of the three traditional sects of Zen in Japanese Buddhism. It is the Japanese line of the Chinese Cáodòng school, which was founded during the Tang dynasty by Dòngshān Liánjiè. It emphasizes Shikantaza, meditation with no objects, anchors, or content. The meditator strives to be aware of the stream of thoughts, allowing them to arise and pass away without interference.