Phelim Robert Hugh O'Neill, 2nd Baron Rathcavan, was a politician in Northern Ireland and a hereditary peer in the British House of Lords.
- Occupation
- politician
- Position held
- member of the 41st Parliament of the United Kingdom, member of the 40th Parliament of the United Kingdom, Member of the Parliament of Northern Ireland, member of the House of Lords
- Citizenship
- United Kingdom
- Born
- November 2, 1909
- Died