Charles Mordaunt, 4th Earl of Peterborough, 2nd Earl of Monmouth (1708 – 1 August 1779) was a British peer and Member of Parliament, styled Viscount Mordaunt from 1710 to 1735.
He was the son of John Mordaunt, Viscount Mordaunt and Lady Frances Powlett, and succeeded his grandfather, Charles Mordaunt, 3rd Earl of Peterborough in the earldom. He was succeeded by Charles Mordaunt, 5th Earl of Peterborough.
| Peerage of England | ||
|---|---|---|
| Preceded by Charles Mordaunt |
Earl of Peterborough and Monmouth 1735–1779 |
Succeeded by Charles Mordaunt |