David Charles Penhaligon (6 June 1944 – 22 December 1986) was a British politician from Cornwall who was Liberal Member of Parliament for the constituency of Truro from 1974-86. He was a popular figure in all parties and had potential to be a front-runner for the party leadership had he not been killed in a car accident. In 2014 a Crowdfunder campaign was launched to record his life's work and impact.