The 2002 Barnet Council election took place on 2 May 2002 to elect members of Barnet London Borough Council in London, England. The whole council was up for election and the Conservative party gained overall control of the council, replacing the Labour-Liberal Democrat coalition that had governed Barnet for the previous 8 years.
Before the election a Labour-Liberal Democrat coalition ran the council. Since the last election in 1998, the Local Government Commission carried out a periodic electoral review of Barnet under the Local Government Act 1992 and made a number of boundary changes increasing the number of seats by three.
Overall turnout in the election was 34.04%.
The by-election was called following the resignation of Cllr Alan Williams.
The by-election was called following the resignation of Cllr Ruth Nyman.
The by-election was called following the disqualification of Cllr Alan Sloam.
The by-election was called following the resignation of Cllr Vanessa Gearson.
The by-election was called following the resignation of Cllr Kantilal Patel in October 2005. It was only the third time in the council's history that a seat had changed hands in a by-election.