Baron Ashburton, of Ashburton in the County of Devon, is a title that has been created twice, once in the Peerage of Great Britain and once in the Peerage of the United Kingdom. Since 1835, the title has been held by members of the Baring family.

John Dunning, 1st Baron Ashburton, of Spitchwick the parish of Widecombe-in-the-Moor, Devon, was an English lawyer and politician, born in Ashburton in Devon, who served as Solicitor-General from 1768. He was first noticed in English politics when he wrote a notice in 1762 defending the British East India Company merchants against their Dutch rivals. He was a member of parliament from 1768 onward. His career in the House of Commons is best known for his motion in 1780 that "the influence of the crown has increased, is increasing, and ought to be diminished". He was created Baron Ashburton in 1782.