Robert Brennan
Robert Brennan may refer to:
- Bobby Brennan, English professional footballer
- Bobby Brennan (soccer), American soccer defender
- Robbie Brennan, Irish drummer and a former member of the band Grand Slam
- Robert E. Brennan, American businessman
- Robert Brennan (priest), priest and social activist
- Robert Brennan (journalist), Irish writer, diplomat and a founder of The Irish Press newspaper
- Robert J. Brennan, American prelate of the Roman Catholic Church