William J. Boyd (December 22, 1852 – October 1, 1912) was an American Major League Baseball player born in New York, New York. He mainly played third base and right field for three different teams during his four-year career in the National Association from 1872 through 1875. He batted .290, hit three home runs, and drove in 93 runs in those four years. While with the 1875 Brooklyn Atlantics, he managed for a period of two games, losing both. When he wasn't playing in that final season, he filled in for the umpire on 20 occasions.