Shinji Shūmeikai (神慈秀明会) is an international spiritual fellowship and organization founded in 1970 by Mihoko Koyama (小山美秀子). Prior to founding the organization, she was president of the Shumei Church, the largest internal association of the Sekai Kyūseikyō , and founded the organization as a spin-off of the Church of World Messianity. The purpose of the organization was to promote the health, happiness and harmony of all people by applying the insights of Mokichi Okada, the founder of the Church of World Messianity. According to the organization, the founder is not Mihoko Koyama, but Mokichi Okada.