Ronnie Nyogetsu Reishin Seldin (b. Brooklyn, New York, 1947) is a noted shakuhachi player.
He studied theology at the New School for Social Research, then went to Japan where he studied the shakuhachi, receiving the name Nyogetsu in 1975. By 2001 he received his Grand Master's license at the level of Kyu-Dan. and was given the name Reishin. ("Heart/Mind of the Bell") He performed on the soundtrack for A Family Gathering (1989) and also appears on the Grammy Award-nominated "The Planet Sleeps."
He is of the Tenrikyo faith and lives with his wife Brenda in New York City. His wife is a practicing Chan Buddhist.
He is the founder and director of the Ki-Sui-An Shakuhachi Dojo and teaches shakuhachi regularly in New York City, Philadelphia, Syracuse, and Boston, and leads regular intensive shakuhachi retreats at Zen monasteries in upstate New York.