Sir James Dillon, 3rd Earl of Roscommon was an Irish magnate and politician. He was born a Catholic but converted at a young age to the Church of Ireland. He supported Strafford during his term as governor of Ireland. In the Confederate Wars and the Cromwellian conquest he was a royalist. He died in 1649, but was nevertheless included as the fifth on the list of people that were excluded from pardon in Cromwell's 1652 Act of Settlement.
- Position held
- Member of Parliament in the Parliament of Ireland
- Citizenship
- Kingdom of England
- Born
- 1600
- Died
