Sir William Cunliffe Brooks, 1st Baronet, DL (30 September 1819 – 9 June 1900) was an English barrister, banker and Conservative politician who sat in the House of Commons between 1869 and 1892.
Brooks was the son of Samuel Brooks, a banker of Manchester and his wife Margaret Hall daughter of Thomas Hall. After his education at Rugby and St John's College, Cambridge he was called to the Bar at Inner Temple in 1847. He went on the Northern Circuit until the death of his father in 1864 when he became sole partner of Cunliffe Brooks and Co, Manchester. He opened Brooks and Co., 81 Lombard Street, London. He was a J.P. for Lancashire, Cheshire and Manchester, and Deputy Lieutenant for Lancashire and Aberdeen. His main residence for most of that time was the historic Barlow Hall, Chorlton-cum-Hardy.
In 1869 Brooks was elected at a by-election as a Conservative Member of Parliament (MP) for East Cheshire. He held the seat until it was divided under the Redistribution of Seats Act 1885, and at the 1885 general election he unsuccessfully contested the new Macclesfield division. The baronetcy was conferred on him in 1886. At the 1886 election he was elected as MP for Altrincham, holding the seat until he stood down at the 1892 general election.