John Hope, 4th Earl of Hopetoun PC (17 August 1765-27 August 1823), known as the Honourable John Hope from 1781 to 1809 and as the Lord Niddry from 1809 to 1816, was a Scottish soldier and politician.

Hopetoun was the only son of John Hope, 2nd Earl of Hopetoun, by his second wife Jane Oliphant. His mother died when he was one-year-old. Hopetoun was a General in the Army and a Colonel in the 42nd Regiment and fought with distinction in the Peninsular War. He also sat as Member of Parliament for Linlithgowshire from 1790 to 1800, served as Lord-Lieutenant of Linlithgowshire from 1826 to 1823 and was admitted to the Irish Privy Council in 1812. In 1809, seven years before he succeeded in the earldom, he was raised to the peerage in his own right as Baron Niddry, of Niddry Castle in the County of Linlithgow, with remainder to the male issue of his father. In 1816 he succeeded his elder half-brother as fourth Earl of Hopetoun.

Lord Hopetoun married firstly Elizabeth, daughter of Charles Hope-Weir, in 1798. After her death he married secondly Louisa Dorothea Wedderburn. He died in August 1823, aged 58, and was succeeded in his titles by his eldest son from his second marriage, John. Lady Hopetoun died in 1836.

References

• Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990.
• Leigh Rayment's Peerage Page
• www.thepeerage.com