Mark Dwayne Ryal (born April 28, 1960 in Henryetta, Oklahoma) is a former professional baseball player who played six seasons for the Kansas City Royals, Chicago White Sox, California Angels, Philadelphia Phillies, and Pittsburgh Pirates of Major League Baseball. He also played two seasons in Japan for the Chunichi Dragons. He is the father of Rusty Ryal, an infielder for the Albuquerque Isotopes.