Henry William Fischer (born January 11, 1940) is a former pitcher in Major League Baseball who played with three different teams between 1962 and 1967.

Fischer was signed by the Milwaukee Braves as a free agent in 1959 out of the Seton Hall University.

With the 1964 Braves, he posted career-highs in wins (11), starts (28), complete games (9), and innings pitched (1681⁄3).

In a six-season career, Fischer posted a 30–39 record with 369 strikeouts and a 4.23 ERA in 168 appearances, including 77 starts, 14 complete games, five shutouts, seven saves, and 5462⁄3 innings of work.

This biographical article relating to an American baseball pitcher born in the 1940s is a stub.