Sir Charles Vavasour, 1st Baronet, of Killingthorpe (c. 1585 – 1644) was an English soldier who fought the insurgents in the Irish Rebellion of 1641 where he excelled at the Battle of Liscarroll in 1642 but was defeated in the Battle of Cloughleagh of the ensuing Irish Confederate Wars. After the cease-fire of September 1643 he was sent to England to fight the Parliamentarians in the First English Civil War but his regiment mutinied and he resigned his commission, dying soon after in Oxford.