William Unwin Heygate (1825 - 2 March 1902), was a British Conservative Member of Parliament and Leicestershire politician.
Heygate was born in 1825, the second son of Sir William Heygate, 1st Baronet (1782-1844), Member of Parliament and Lord Mayor of London. He was educated at Eton College and Merton College, Oxford, where he took classical honours, and was afterwards called to the bar.
After unsuccessfully contesting Bridport in 1857, Heygate entered the Parliament for the Conservative Party from Leicester in 1861, but was defeated in the 1865 General election. He returned briefly as a member from Stamford in a by-election in1868 (the constituency was abolished later the same year), and was again elected for South Leicestershire in 1870, serving until he stepped down in 1880.
Heygate was a prominent politician in Leicestershire. He was an Alderman of Leicestershire County Council, a Justice of the peace and a Deputy Lieutenant of the county. In business, he was Chairman of Pare′s Leicestershire Banking Company, a director of the Midland Railway, and of the Canada Company.