William Henry Kelly (December 28, 1898 – April 8, 1990) was an American first baseman and scout in Major League Baseball, and a star power-hitter, umpire and manager in minor league baseball. The native of Syracuse, New York, threw and batted right-handed, stood 6' (183 cm) tall and weighed 190 pounds (86 kg) as a player. Kelly died in his home city of Syracuse at the age of 91. He was elected to the International League Hall of Fame in 1954.