Willie Arthur Royster (April 11, 1954 – November 23, 2015) was an American professional baseball player. The catcher spent eleven seasons in minor league baseball, with a brief, four-game Major League trial for the 1981 Baltimore Orioles. He threw and batted right-handed, stood 5 feet 11 inches (1.80 m) tall and weighed 180 pounds (82 kg). In Royster's four MLB games played, he appeared as a late-inning defensive replacement and pinch hitter. In his four big-league at bats, he struck out twice and grounded out twice.