Elections to West Wiltshire District Council were held on 6 May 1999. The whole council was up for election and the Liberal Democrats held their overall control, winning twenty-seven seats while the Conservatives took ten, Independents four and the Labour Party two.
Three single-member wards, Ethandune, Melksham Roundpond, and Westbrook, had only one candidate in each case and thus were uncontested.
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