Frederick Bull (c. 1714–1784) was Lord Mayor of London and a radical politician who sat in the House of Commons from 1773 to 1784.
Bull stood for the City of London at a by-election in 1773 and was returned after a hard-fought contest on 23 December 1773.
Bull was a Dissenter and close supporter of John Wilkes.
He followed the Bill of Rights Society programme throughout his parliamentary career.
His politics were radical and anti-Popery and in the spring of 1780 he supported Lord George Gordon’s Protestant crusade which led to the riots in June.