Francis Dashwood, 15th Baron le Despencer (December 1708–11 December 1781) was an English rake and politician. He was Chancellor of the Exchequer (1762-1763) and founder of The Hellfire Club.
Dashwood was born in London. He was educated at Eton College where he became associated with William Pitt the Elder. Orphaned at age 16, he went on a Grand Tour of Europe in 1726.