Daehaeng Kun Sunim (대행, 大行; 1927-2012) was a Korean Buddhist nun and Seon(禪) master. She taught monks as well as nuns, and helped to increase the participation of young people and men in Korean Buddhism.She made laypeople a particular focus of her efforts, and broke out of traditional models of spiritual practice, teaching so that anyone could practice, regardless of monastic status or gender.