Lambart is a surname. Notable people with the surname include:Charles Lambart, 1st Earl of Cavan PC (Ire) (1600–1660), MP for the rotten borough of Bossiney and a military commander Charles Lambart, 3rd Earl of Cavan (1649–1702), inherited the Earldom of Cavan in 1690 from Richard Lambart, 2nd Earl of Cavan Evelyn Lambart (1914–1999), Canadian animator and technical director with the National Film Board of Canada Ford Lambart, 5th Earl of Cavan (1718–1772), Irish peer and freemason Rudolph Lambart, 10th Earl of Cavan, KP, GCB, GCMG, GCVO, GBE (1865–1946), British Army commander during WWI Frederick Lambart, 8th Earl of Cavan, hereditary peer Frederick Lambart, 9th Earl of Cavan KP, PC (1839–1900), Irish peer who served in the Royal Navy and as a Liberal politician Horace Lambart, 11th Earl of Cavan (1878–1950), soldier and priest Michael Lambart, 12th Earl of Cavan (1911–1988), hereditary peer Oliver Lambart, 1st Baron Lambart, military commander and an MP in the Irish House of Commons Richard Lambart, 2nd Earl of Cavan (1628–1691), Member of Parliament for Kilbeggan between 1647 and 1649 Richard Lambart, 4th Earl of Cavan PC (I), inherited the Earldom of Cavan in 1702 from Charles Lambart, 3rd Earl of Cavan Richard Lambart, 6th Earl of Cavan, Anglo-Irish peer and soldier Richard Lambart, 7th Earl of Cavan (1763–1837), military commander throughout the Napoleonic era and beyond