Triune is an unincorporated community in eastern Williamson County, Tennessee, approximately halfway between Franklin and Murfreesboro. The community is located along the Wilson Branch of the Harpeth River. The intersection of former local roads State Route 96 (Murfreesboro Road) and the concurrency of U.S. Routes 31A and 41A (Nolensville Road) is here. The community is located just north of these roads interchange with Interstate 840.