John Perceval, 2nd Earl of Egmont PC FRS (24[1] or 25[2] February 1711 – 4 December 1770) was a British politician, political pamphleteer, and genealogist who served as First Lord of the Admiralty.

His maternal grandparents were Sir Philip Parker, 2nd Baronet of Arwarton and the former Mary Fortray (a daughter of landowner and author Samuel Fortrey of Byall Fen).

In 1762 he was created Baron Lovel and Holland, of Enmore in the County of Somerset, in the Peerage of Great Britain, which gave him an automatic seat in the House of Lords.

[6] He was appointed joint Postmaster-General for 1762–3 alongside Robert Hampden, 4th Baron Trevor[citation needed] and served as First Lord of the Admiralty from 1763 to 1766.

Following his death, his widow was created on 23 May 1770 Baroness Arden of Lohort Castle in the county of Cork in the peerage of Ireland, with remainder to her heirs male.