Franklin Marion Donnelly (October 7, 1869 – February 3, 1953) was a professional baseball player.

He was a right-handed pitcher for parts of two seasons (1893–94) with the Chicago Colts.

For his career, he compiled a 3–1 record in 7 appearances, with a 6.36 earned run average and 7 strikeouts.

Donnelly was born in Tamaroa, Illinois and later died in Canton, Illinois at the age of 83.

This biographical article relating to an American baseball pitcher born in the 1860s is a stub.