Robert O'Donnell

• Robert R. O'Donnell. American businessman and philanthropist
• Robert O'Donnell (cricketer), New Zealand cricketer
• R.J. O'Donnell. American businessman and philanthropist
• Bob O'Donnell, American politician
• Robert O'Donnell, paramedic involved in the rescue of Jessica McClure
• Bob O'Donnell (footballer), Australian rules footballer
• Rob O'Donnell. English rugby union player