William Charles Fischer (March 2, 1891 – September 4, 1945) was a catcher in Major League Baseball.

After the 1912 season, he was picked up by the Brooklyn Dodgers in the rule 5 draft and was their backup catcher in 1913 and 1914.

Fischer had a career year in 1915, hitting .329 and finishing second in the batting race to Benny Kauff.

However, the Federal League folded after the season, and Fischer was sent to the Chicago Cubs.

This biographical article relating to an American baseball catcher born in the 1890s is a stub.