Edward Courtenay, 1st Earl of Devon (1485 creation)

Edward Courtenay, 1st Earl of Devon, KG (died 1509) was an English nobleman. He was a member of the ancient Courtenay family.

Edward Courtenay was the son of Sir Hugh Courtenay (c.1427–6 May 1471) of Boconnoc, Cornwall, son of Sir Hugh Courtenay (aft 1358–5 or 6 March 1425) of Haccombe, younger brother of Edward Courtenay, Earl of Devon (d. 1419).

A member of a family that had consistently supported the Lancastrian cause throughout the Wars of the Roses, Courtenay became involved with the opposition to King Richard III in the 1480s, having secret dealings with Margaret Beaufort, the dowager queen Elizabeth Woodville, and the latter's son Thomas Grey, Marquess of Dorset. He acted a courier between the conspirators in England and Henry Tudor's entourage in France, and accompanied Henry on his expedition to England and fought for him at the Battle of Bosworth Field in 1485.

Their Lancastrian partisanship had led to the forfeiture of the Courtenay earldom of Devon under Edward IV. On the restoration of Henry VI in 1470, John Courtenay had been restored to the earldom, but was attainted by Edward IV on his return to power in 1471 and killed shortly afterwards at the Battle of Tewkesbury.