The 1991 Bristol City Council election took place on 2 May 1991 to elect members of Bristol City Council in England. This was on the same day as other local elections. One third of seats were up for election. Two seats were contested in Windmill Hill due to an extra vacancy occurring. There was a general swing against the Conservatives. In Lockleaze, the Labour Party failed to field a candidate because of a nomination papers error.
The change is calculated using the results when these actual seats were last contested, i.e. the 1987 election.