John Crichton-Stuart, 6th Marquess of Bute, KBE FRSE FRSA (27 February 1933 – 21 July 1993) was a Scottish peer, benefactor and patron of the arts.

[3] On his father's death in 1956, Crichton-Stuart inherited his titles as well as estates in Wales, England, and Scotland, including six castles and a highly esteemed collection of European paintings.

[2] To settle death duties, he sold property in Cardiff to the city corporation and transferred Robert Adam houses on the south side of Charlotte Square, Edinburgh to the National Trust for Scotland.

His proposers were Sir Alwyn Williams, Frank Willett, Colin Thompson, R. G. W. Anderson, C. D. Waterston and Charles Kemball.

19 November 1933), daughter of Wolstan Beaumont Charles Weld-Forester and wife Anne Grace Christian Stirling-Home-Drummond-Moray, and they divorced in 1977.