Stephen Tokan "Steve" Hagen, Rōshi, (born 1945) is the founder and head teacher of the Dharma Field Zen Center in Minneapolis, Minnesota, and a Dharma heir of Dainin Katagiri-roshi. He is a published author of several books on Buddhism. Among them, "Buddhism Plain & Simple" is one of the top five bestselling Buddhism books in the United States. He has been a student of Buddhist thought and practice since 1967. In 1975 he became a student of Dainin Katagiri Roshi in Minneapolis and was ordained in 1979. He has studied with teachers in the U.S., Asia, and Europe, and in 1989 received Dharma transmission (endorsement to teach) from Katagiri Roshi. He is currently head teacher at Dharma Field.