Peter Kerr, 12th Marquess of Lothian

The Most Honourable The Marquess of Lothian KCVO
by Walter Stoneman, 1949
Tenure	12 December 1940 – 11 October 2004
Predecessor	Philip Kerr, 11th Marquess
Successor	Michael Kerr, 13th Marquess
Born	Peter Francis Walter Kerr (1922-09-08)8 September 1922 Shardlow, Derbyshire, England
Died	11 October 2004(2004-10-11) (aged 82) Jedburgh, Scotland
Spouse(s)	Antonella Reuss Newland ​ ​ (m. 1943)​
Issue	Lady Mary von Westenholz Michael Kerr, 13th Marquess of Lothian Lady Cecil Cameron Clare FitzRoy, Dowager Countess of Euston Elizabeth Scott, Duchess of Buccleuch Ralph Kerr, 14th Marquess of Lothian
Father	Andrew William Kerr
Mother	Marie Kerr

Peter Francis Walter Kerr, 12th Marquess of Lothian, KCVO (8 September 1922 – 11 October 2004) was a British peer, politician and landowner. He was the son of Captain Andrew William Kerr by his wife, Marie Kerr. Both of his parents were male-line descendants of William Kerr, 5th Marquess of Lothian.