Koshin Flint Sparks is a Zen priest and guiding teacher in the Soto Zen lineage. He holds a PhD in psychology and worked as a psychologist and psychotherapist specializing in behavioral medicine before beginning formal Zen training at San Francisco Zen Center in 1994 under Zenkei Blanche Hartman. He was ordained as a priest in 2001 and received Lay Entrustment in 2007. He founded the Austin Zen Center and co-founded Appamada, a lay Zen practice center in Austin. In 2022, he received Dharma Transmission from Bushin Peg Syverson. He currently guides sanghas in Austin, Madison, Minneapolis/St Paul, the UK, and Switzerland, and is based in Santa Fe, New Mexico.