The 2003 Winchester Council election took place on 1 May 2003 to elect members of Winchester District Council in Hampshire, England. One third of the council was up for election and the Liberal Democrats stayed in overall control of the council.
20 were contested in the election with the election in Droxford, Soberton and Hambledon being a by-election after the previous Conservative councillor resigned. 2 other seats saw the sitting councillor standing down, Owslebury and Curdridge and St Luke, while 3 of the Liberal Democrat cabinet members were defending seats.
The election saw the Liberal Democrats just keep a majority on the council with 29 of the 57 seats. However they lost 4 seats to the Conservatives and 2 to Labour.