Hugh Montgomerie, 12th Earl of Eglinton, Scottish composer and politician, Lord Lieutenant of Ayrshire (died 1819)

Colonel Hugh Montgomerie, 12th Earl of Eglinton, KT, styled Lord Montgomerie from 1769 to 1796, was a British politician, military officer and composer.

This is a list of people who served as Lord Lieutenant of Ayrshire, Scotland. The post was abolished in 1975, being replaced by the Lord Lieutenant of Ayrshire and Arran.

• Archibald Montgomerie, 11th Earl of Eglinton 17 March 1794 – 30 October 1796
• Hugh Montgomerie, 12th Earl of Eglinton 23 November 1796 – 14 December 1819
• George Boyle, 4th Earl of Glasgow 7 January 1820 – 15 August 1842
• Archibald Montgomerie, 13th Earl of Eglinton 15 August 1842 – 4 October 1861
• Archibald Kennedy, 2nd Marquess of Ailsa 4 December 1861 – 20 March 1870
• John Dalrymple, 10th Earl of Stair 15 June 1870 – 1897
• George Arnulph Montgomerie, 15th Earl of Eglinton 1897 – 10 August 1919
• Archibald Kennedy, 3rd Marquess of Ailsa 16 November 1919 – 1937
• Sir Charles Fergusson, 7th Baronet 18 February 1937 – 1950
• Sir Geoffrey Hughes-Onslow 17 July 1950 – 1969
• Sir James Fergusson, 8th Baronet 7 April 1969 – 25 October 1973
• Col. Bryce Muir Knox 5 March 1974 – 1991