Lieutenant-Colonel Lord Edward Cavendish MP (28 January 1838 – 18 May 1891) was a 19th-century British politician, soldier, and nobleman.

His father and his two surviving brothers were all Members of Parliament (MPs): his eldest brother Spencer, MP for North Lancashire 1857–91 and later 8th Duke of Devonshire, led the Liberal Party and was asked three times to be Prime Minister by Queen Victoria; the middle brother, Frederick was MP for the West Riding and Chief Secretary for Ireland and was assassinated in 1882.

On retirement from the regular army he joined the 2nd Derbyshire Militia (later the Sherwood Foresters), but transferred to the King's Own Royal Lancaster Regiment in 1888.

Upon his death in Marylebone aged 53, his son, Victor, was elected unopposed to replace him, later becoming the 9th Duke of Devonshire.

This article about a Liberal Member of the Parliament of the United Kingdom representing an English constituency is a stub.