O'Kelly
O'Kelly is a surname. Notable people with the surname include:
- Aloysius O'Kelly, Irish painter, brother of James Joseph O'Kelly
- Auguste O'Kelly, music publisher in Paris
- Christopher O'Kelly, Canadian recipient of the Victoria Cross
- Don O'Kelly, American actor
- Edward Peter O'Kelly, Irish politician
- Gabriel O'Kelly, Irish clergyman
- George O'Kelly, Franco-Irish pianist and composer
- Henri O'Kelly, Franco-Irish composer, pianist and organist
- James Joseph O'Kelly, Irish politician
- John J. O'Kelly, Irish politician
- Joseph O'Kelly, Franco-Irish composer and pianist
- Malcolm O'Kelly, Irish rugby player
- Seán T. O'Kelly, Irish politician, second President of Ireland
- Seumas O'Kelly, Irish writer
- James O’Kelly, American Methodist clergyman
- Michael the O'Kelly, hero created by Manning O'Brine
