Elections to Slough Borough Council were held on 4 May 2006. One third of the council was up for election. This was the 121st Slough general local authority election (including both whole Council elections and elections by thirds) since Slough became a local government unit in 1863. Overall, the Labour Party gained three seats, the Conservative Party lost two and the Liberal Democrats lost one. This result was slightly unusual compared with the other UK local elections on the same day whereby the Conservative Party generally gained seats at the expense of the Labour Party.