Sir John Trevor (1637 - 20 May 1717), Speaker of the House of Commons (1685). A partisan of James II, he was deprived of his office on the accession of William III, but in 1690 he was again a member of parliament, becoming Speaker for the second time in 1690 and master of the rolls in 1693.

In 1695 he was found guilty of accepting a bribe and was expelled from the House of Commons, but he retained his judicial position until his death on the 20th of May 1717. Through his daughter Anne Sir John was the ancestor of the Hills, marquesses of Downshire, and of the family of Hill-Trevor, Viscounts Dungannon from 1766 to 1862.

|- style="text-align: center;" | width="30%" |Preceded by:
Sir John Churchill | width="40%" style="text-align: center;" |Master of the Rolls
1685–1689 | width="30%" |Succeeded by:
Henry Powle

|- style="text-align: center;" | width="30%" |Preceded by:
Henry Powle | width="40%" style="text-align: center;" |Speaker of the House of Commons
1689–1695 | width="30%" |Succeeded by:
Paul Foley

|- style="text-align: center;" | width="30%" |Preceded by:
Sir Henry Powle | width="40%" style="text-align: center;" |Master of the Rolls
1693–1717 | width="30%" |Succeeded by:
Sir Joseph Jekyll