William Hay, 10th Marquess of Tweeddale

The Marquess of Tweeddale
In The Sketch, 27 November 1895
Member of Parliament for Haddington Burghs
In office
1878–1879
Preceded bySir Henry Ferguson Davie
Succeeded bySir David Wedderburn, 3rd Baronet
Member of Parliament for Taunton
In office
1865–1868
Preceded byArthur Mills
Succeeded byEdward William Cox
Personal details
Born(1826-01-29)29 January 1826
Yester House, Gifford, East Lothian
Died25 November 1911(1911-11-25) (aged 85)
London, England
Political partyLiberal
Spouse
Candida Louisa Bartolucci
(after 1878)
EducationImperial Service College

William Montagu Hay, 10th Marquess of Tweeddale, KT, DL (29 January 1826 – 25 November 1911), known before 1878 as Lord William Hay or Lord William Montagu Hay, was a Scottish landowner, peer and politician. He was born at Yester House, near Gifford, East Lothian, and served in British India as a member of the Bengal Civil Service and later as a Liberal Member of Parliament.

In 1878 he succeeded his brother as Marquess of Tweeddale and as owner of some 40,000 acres in Scotland. He went on to become Lord High Commissioner to the General Assembly of the Church of Scotland and was appointed a Knight of the Thistle.