Robert Duffy
Robert, Rob, Bob, or Bobby Duffy may refer to:
- Robert Duffy , Lieutenant Governor of New York
- Robert Duffy , Welsh footballer
- Robert Duffy , Dickinson College football coach
- Bob Duffy , American basketball player in the BAA
- Bob Duffy , American basketball player in the NBA
- Bobby Duffy, Irish soccer player
- Robert Duffy , American businessman
- Robert Duffy , American video game programmer