William Howard Dillman (born May 25, 1945) is a retired American professional baseball player. A right-handed pitcher, he appeared in 50 Major League games over two seasons for the 1967 Baltimore Orioles and the 1970 Montreal Expos. He attended Wake Forest University, stood 6 feet 2 inches (1.88 m) tall and weighed 180 pounds (82 kg). Dillman finished 16 games in his career and amassed 3 saves.