The Bristol riots refer to a number of significant riots in the city of Bristol in England.
In 1794 the populace of Bristol were said to be "apt to collect in mobs on the slightest occasions; but have been seldom so spirited as in the late transactions on Bristol-bridge." The Bristol Bridge Riot of 30 September 1793 began as a protest at renewal of an act levying tolls on Bristol Bridge, which included the proposal to demolish several houses near the bridge in order to create a new access road, and controversy about the date for removal of gates. 11 people were killed and 45 injured, making it one of the worst massacres of the 18th century in England.
The Bristol Riots of 1831 took place after the House of Lords rejected the second Reform Bill, which aimed to get rid of some of the rotten boroughs and give Britain's fast growing industrial towns such as Bristol, Manchester, Birmingham, Bradford and Leeds greater representation in the House of Commons. Bristol had been represented in the House of Commons since 1295, but by 1830 only 6,000 of the 104,000 population had the vote.
Local magistrate Sir Charles Wetherell, a strong opponent of the Bill, visited Bristol to open the new Assize Courts, on 29 October. He threatened to imprison participants in a disturbance going on outside, and an angry mob chased him to the Mansion House in Queen Square. The magistrate escaped in disguise but the mayor and officials were besieged in the Mansion-house.
The rioters numbered about 500 or 600 young men and continued for three days, during which the palace of Robert Gray the Bishop of Bristol, the Mansion House, and private homes and property were looted and destroyed, along with demolition of much of the gaol. Work on the Clifton Suspension Bridge was halted and Isambard Kingdom Brunel was sworn in as a special constable.