Michael Lambart, 12th Earl of Cavan

Michael Edward Oliver Lambart, 12th Earl of Cavan (29 October 1911 – 17 November 1988) was an hereditary peer. He succeeded his father in 1950.

He was commanding officer of the Shropshire Yeomanry between 1955 and 1958.

He married Essex Lucy Cholmondeley, daughter of Henry Arthur Cholmondeley and Helen Mary Wrigley, on 10 April 1947.

As the 12th Earl had no sons, the title passed from him to a distant cousin, Roger Cavan Lambart, a descendant of the 7th Earl.