Elections to Penwith District 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:

• Liberal Democrat 12
• Conservative 7
• Independent 7
• Labour 6
• Others 2

• "Council poll results", The Guardian 9 May 1998 page 16
• Turnout figures^{[permanent dead link]}
• Penwith District Council Election Results 1973-2007