Charles Cathcart may refer to:
Charles Cathcart, 8th Lord Cathcart (1686–1740), British Army officer Charles Cathcart, 9th Lord Cathcart (1721–1776), British soldier and diplomat Charles Cathcart, 2nd Earl Cathcart (1783–1859), British Army general and Governor General of the Province of Canada Charles Cathcart, 7th Earl Cathcart (born 1952), British peer and member of the House of Lords Charles Allan Cathcart (1759–1788), British soldier and MP, son of the 9th Lord Cathcart Charles W. Cathcart (1809–1888), United States Representative and Senator from Indiana Charles Walker Cathcart (1853–1932), Scottish surgeon and rugby union player