Viscount Brentford, of Newick in the County of Sussex, is a title in the Peerage of the United Kingdom. It was created in 1929 for the Conservative politician Sir William Joynson-Hicks, 1st Baronet, chiefly remembered for his tenure as Home Secretary from 1924 to 1929. He had already been created a baronet, of Holmsbury, in the Baronetage of the United Kingdom, on 20 September 1919. His younger son, the third Viscount, was also a Conservative politician. On 29 January 1956, two years before he succeeded his elder brother in the viscountcy, he was created a baronet, of Newick. As of 2017 the titles are held by the third Viscount's son, the fourth Viscount, who succeeded in 1983, a retired solicitor and has served as the president of the Church Society.
The family seat is Cousley Place, near Wadhurst, East Sussex.
Viscounts Brentford (1929)
The heir apparent is the present holder's only son the Hon. Paul William Joynson-Hicks (born 1971).