John Duncan Vaughan Campbell, 5th Earl Cawdor, TD FSAScot FRGS (17 May 1900 – 9 January 1970), styled Viscount Emlyn between 1911 and 1914, was a Scots-Welsh nobleman.
He fought in the First World War, with the Royal Navy and was awarded the Territorial Decoration.
He fought in World War II as a Lieutenant-Colonel and was mentioned in despatches.
Lord Cawdor married, firstly, Wilma Mairi Vickers (1906–1982), daughter of Vincent Cartwright Vickers, on 15 May 1929.
[5] He married, secondly, Elizabeth Topham Richardson, daughter of John Topham Richardson (1850–1934) of Harps Oak, Merstham, Surrey, and Katharine Rose Richardson, née Smyth (1863–1945), on 29 June 1961.