Henry O'Brien, Lord Ibrackan, or Lord O'Brien, styled Hon. Henry O'Brien until 1657, was an Irish nobleman and politician. He was the son of Henry O'Brien, 7th Earl of Thomond, and his first wife, and cousin, Anne O'Brien.
- Occupation
- politician
- Position held
- Member of Parliament in the Parliament of Ireland, Member of Parliament in the Parliament of England, Member of the Privy Council of Ireland, Member of the 1661-79 Parliament
- Born
- 1642
- Died
- 1678
