Arthur Champernowne (?1683–1717), of Dartington, Devon, was an English politician.
He was a Member (MP) of the Parliament of England for Totnes 1715 – 27 April 1717.
He was the son and heir of Arthur Champernowne of Dartington by his second wife Margaret Fowell, a daughter of Sir John Fowell, 2nd Baronet (1623-1677) of Fowelscombe in the parish of Ugborough in Devon.