Elections to Watford Borough Council were held on 4 May 2000. One third of the council was up for election and the Labour Party lost overall control of the council to no overall control.
After the election, the composition of the council was:
| Party | Seats | Gains | Losses | Net gain/loss | Seats % | Votes % | Votes | +/− | |
|---|---|---|---|---|---|---|---|---|---|
| Labour | -1 | ||||||||
| Liberal Democrats | 0 | ||||||||
| Conservative | +1 | ||||||||
