Sir George Lisle (c. 1610 – August 28, 1648) was a Royalist leader in the English Civil War. Lisle's execution without trial, following the siege of Colchester, came to be regarded as a serious miscarriage of justice and Lisle himself was seen as a martyr to the Royalist cause. The known facts suggest that Lisle came from London and was related in some way to George Villiers, 1st Duke of Buckingham. He gained military experience in the army of the Prince of Orange during the 1630s.