William Capers "Doc" Bass (December 4, 1898 – January 12, 1970) was a professional baseball player. He appeared in two games in Major League Baseball for the Boston Braves in 1918, once as a pinch hitter and once as a pinch runner.
In his major league career, Bass had one at bat, in which he singled. He also scored a run and stole a base, although he never appeared in the field. After the 1918 season, Bass continued to play minor league baseball until 1925, primarily as an outfielder.