- O'Connell is a last name of Irish origin.
- It is an Anglicisation of the Gaelic Ó Conaill (meaning "descendant of Conall")
- The personal name Conall is possibly composed of the elements con (from cú meaning "hound" or "wolf") and gal (meaning "valour")
Some famous Connells
- Aaron D. O'Connell, Creator of the world's first quantum machine
- Eileen O'Connell (Irish writer)
- Helen O'Connell (1920–1993), American singer, actress, and dancer
- Thomas J. O'Connell (1882–1969), Irish politician