Josceline Percy, 11th Earl of Northumberland, 5th Baron Percy, of Alnwick Castle, Northumberland and Petworth House, Sussex, was an English peer.
- Occupation
- aristocrat, lawyer
- Position held
- member of the House of Lords, Lord Lieutenant of Northumberland, Lord Lieutenant of Sussex
- Citizenship
- Kingdom of England
- Born
- July 4, 1644
- Died
- May 31, 1670