Donlon may refer to:
People Alphonsus J. Donlon (1867–1923), American Jesuit priest Billy Donlon (born 1977), American college basketball coach Chris Donlon (born 1977), Australian rules football field umpire Denise Donlon (born 1956), Canadian executive, television producer, television host Dolores Donlon (1920–2012), American model and actress Marguerite Donlon (born 1966), Irish dancer, choreographer and ballet director Mary H. Donlon (1893–1977), American lawyer and politician Peter Donlon (1906–1979), American rower Roger Donlon (1934–2024), retired United States Army officer
Places Mary Donlon Hall, a residence hall located on Cornell North Campus