Yoshimoto Ishin (吉本伊信, May 25, 1916 – August 1, 1988) was a Japanese businessman and Jodo Shinshu Buddhist priest who was the founder of the Naikan (内観 looking inside) meditation method in the 1940s,[1] which later was utilised as a psychotherapy treatment. He later acted as prison chaplain to spread Naikan to prisoners.