The Dyke Baronetcy, of Horeham in the County of Sussex, is a title in the Baronetage of England. It was created on 3 March 1677 for Thomas Dyke, Commissioner of Public Accounts and Member of Parliament for Sussex and East Grinstead. The 2nd Baronet married Anne Hart, daughter and heiress of Percival Hart. In 1836 the 5th Baronet unsuccessfully claimed the barony of Braye, of which peerage he was a co-heir through the Hart family. The 7th Baronet was a successful Conservative politician. Percyvall Hart Dyke (1872–1952), grandson of Reverend Thomas Hart Dyke, second son of the 5th Baronet, was a Colonel in the Indian Army. His son Trevor Hart Dyke was a Brigadier in the Queen's Royal Regiment. David Hart Dyke (b. 1938), son of Reverend Eric Hart Dyke, son of the aforementioned Colonel Percyv