Elections to Penwith Council were held on 7 May 1998. One third of the council was up for election and the council stayed under no overall control. Overall turnout was 31.0 %.
After the election, the composition of the council was
| Penwith Local Election Result 1998 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Party | Seats | Gains | Losses | Net gain/loss | Seats % | Votes % | Votes | +/- | ||
| Liberal Democrat | 5 | +2 | 45.5 | |||||||
| Conservative | 2 | +2 | 18.2 | |||||||
| Independent | 2 | 0 | 18.2 | |||||||
| Labour | 1 | -2 | 9.1 | |||||||
| Others | 1 | -2 | 9.1 | |||||||
| Preceded by Penwith Council election, 1996 |
Penwith local elections | Succeeded by Penwith Council election, 1999 |