General Lord Charles FitzRoy (17 July 1764 – 20 December 1829) was a British Army officer and politician.
FitzRoy was the second son of Augustus FitzRoy, 3rd Duke of Grafton and his first wife, Anne, a daughter of Henry Liddell, 1st Baron Ravensworth. After education at Harrow School and Trinity College, Cambridge, he entered the army in 1782 as an ensign. In 1787, he was appointed a captain in the Scots Guards and an equerry in 1788, to Prince Frederick, Duke of York and Albany, under whom he served in Flanders from 1793-4.
In 1795, FitzRoy was appointed an aide-de-camp to King George III with the rank of colonel and promoted to major-general in 1798. From 1798-99, he served in Ireland then in England until 1809, commanding a battalion of the 60th Regiment of Foot from 1804-5. He was appointed colonel of the 48th (Northamptonshire) Regiment of Foot and lieutenant-general in 1805 and general in 1814.
From 1787-96 and again from 1802–18, FitzRoy was member of Parliament for Bury St Edmunds (though never actually spoke in the house). He supported Pitt and favoured abolitionism and Catholic Emancipation.