Thomas Donnelly may refer to:
Thomas Donnelly (Saskatchewan politician) (Thomas F. Donnelly, 1874–1948), Canadian member of Parliament Thomas Donnelly (sergeant-at-arms) (1764–1835), New York legislative officer Thomas Donnelly (Alberta politician) (1933–1997), Alberta MLA Thomas Dean Donnelly, American screenwriter Thomas F. Donnelly (New York City) (1863–1924), New York politician and judge Thomas Wallace Donnelly (1932–2025), American entomologist Tom Donnelly (rugby union) (Thomas Mathew Donnelly, born 1981), New Zealand rugby union player Tommy Donnelly (footballer), Irish association football player Tom Donnelly (Scottish footballer) (born 1947), Tom Donnelly (Australian footballer), Australian rule footballer Tom Donnelly (runner), winner of the 1968 distance medley relay at the NCAA Division I Indoor Track and Field Championships
See also Tommy Donnelly, a character from the NBC series The Black Donnellys Giselle Donnelly (born Thomas Donnelly, 1953), American writer and director of the Center for Defense Studies at the American Enterprise Institute