Roy D. Simmons Jr. (born August 6, 1935) is a former American lacrosse coach who was the head coach of the Syracuse Orange men's lacrosse team from 1971 to 1998. Simmons' teams won the National Collegiate Athletic Association (NCAA) Men's Lacrosse Championship six times (one was later vacated), and appeared in the national semifinals 16 consecutive seasons. He won the F. Morris Touchstone Award for the coach of the year in NCAA men's lacrosse in 1980, and was inducted into the National Lacrosse Hall of Fame in 1991.