Humphrey Sibthorp (3 October 1744 – 25 April 1815) was a British Tory politician who sat in the House of Commons in two periods between 1777 and 1806.
Sibthorp was the eldest surviving son of the botanist Humphry Sibthorp and his first wife Sarah Waldo, daughter of Isaac Waldo of Streatham, Surrey.
In 1758 he matriculated at Corpus Christi College, Oxford on 24 May and was awarded BA in 1762 and MA in 1766.
[1] At the 1774 general election, Sibthorp stood for Parliament at Lincoln and Newark, and was bottom of the poll in both constituencies.
He was re-elected in 1802, but declined to stand 1806 general election, because of ill-health.