Barnsbury is an electoral ward in the London Borough of Islington. The ward has existed since the creation of the borough on 1 April 1965 and was first used in the 1964 elections. It returns three councillors to Islington London Borough Council.
There was a revision of ward boundaries in Islington in 2022.
The election took place on 5 May 2022.
There was a revision of ward boundaries in Islington in 2002.
The election took place on 3 May 2018.
The by-election took place on 14 July 2016, following the resignation of James Murray.
The election took place on 22 May 2014.
The election on 6 May 2010 took place on the same day as the United Kingdom general election.
The election took place on 4 May 2006.
The by-election took place on 26 June 2003, following the resignation of Ian Powney.
The election took place on 2 May 2002.
There was a revision of ward boundaries in Islington in 1978.
The election took place on 7 May 1998.
The election took place on 5 May 1994.
The election took place on 3 May 1990.
The election took place on 8 May 1986.
The by-election took place on 27 October 1983, following the resignation of Chris Smith.
The election took place on 6 May 1982.
The election took place on 4 May 1978.
The election took place on 2 May 1974.
The by-election took place on 12 April 1973.
The election took place on 13 May 1971.
The election took place on 9 May 1968.
The election took place on 7 May 1964.