Elections to Penwith District Council were held on 6 May 1999. One third of the council was up for election and the council stayed under no overall control. Overall turnout was 34.1%.
After the election, the composition of the council was:
- Liberal Democrat 9
- Conservative 9
- Independent 8
- Labour 5
- Others 2
- Vacant 1
Results
| Party | Seats | Gains | Losses | Net gain/loss | Seats % | Votes % | Votes | +/− | |
|---|---|---|---|---|---|---|---|---|---|
| Conservative | 5 | +2 | 45.5 | ||||||
| Independent | 5 | +1 | 45.5 | ||||||
| Labour | 1 | -1 | 9.1 | ||||||
| Liberal Democrats | 0 | -2 | 0.0 | ||||||
