| Office: | Member of Parliament for Coventry |
| Term Start: | 1805 |
| Term End: | 1812 |
| Predecessor: | Francis William Barlow Peter Moore |
| Alongside: | Peter Moore |
| Successor: | Joseph Butterworth Peter Moore |
| Office1: | Member of Parliament for St Ives |
| Term Start1: | 1790 |
| Term End1: | 1796 |
| Predecessor1: | William Praed Richard Barwell |
| Alongside1: | William Praed |
| Successor1: | William Praed Sir Richard Glyn |
| Children: | 9, including John and Charles |
| Relations: | Charles Mills (brother) Charles Mills, 1st Baron Hillingdon (grandson) |
William Mills (10 November 1750 – 20 March 1820) was a British Member of Parliament and Director, East India Company.
John Mills was born on 10 November 1750.[1] He was the eldest son of the Rev. John Mills, rector of Barford and Oxhill, Warwickshire, and his younger brother was Charles Mills, MP for Warwick.[2]
He was educated at Felsted School. He inherited Warden's Hall, High Ongar, Essex from his uncle William in 1782 and succeeded his father in 1791.
He served as a director of the East India Company from 1778 to 1785. He was elected MP for St Ives in 1790, sitting until 1796 and for Coventry for 1805 to 1812. He was appointed High Sheriff of Hampshire for 1803–04.[3]
On 7 April 1786, Mills married Elizabeth Digby (1758–1828), the daughter of Hon. Wriothesley Digby (son of the 5th Baron Digby) of Coleshill and Meriden Hall, Warwickshire. Together, they had six sons and three daughters,[3] including:
Mills died on 20 March 1820, leaving his sons John and Charles, £10,000 each, as well as William's brother, Charles's estate.[3]