Vincent Leo Molyneaux (August 17, 1888 – May 4, 1950) was a relief pitcher in Major League Baseball who played for the St. Louis Browns (1917) and Boston Red Sox (1918).

Listed at 6' 0", 180 lb., Molyneaux batted and threw right-handed.

[1] In his career, Molyneaux posted a 1–0 record with a 4.41 ERA in 13 games, including five strikeouts, 28 walks, 21 hits allowed, and 32+1⁄3 innings of work without a save.

Molyneaux was a member of the 1918 American League champion Red Sox, although he did not play in the World Series.

This biographical article relating to an American baseball pitcher born in the 1880s is a stub.