John Courtenay may refer to:

• John Courtenay (of Tremere) (c. 1520 – 1560), MP for Lostwithiel, Bodmin and Penryn in the United Kingdom
• John Courtenay, 15th Earl of Devon (c. 1435 – 1471)
• John Courtenay (1738–1816), Member of Parliament for Tamworth and Appleby in the United Kingdom
• John Courtenay Trewin (1908–1990), English journalist and writer

See also[edit]

• John Courtney (disambiguation)
• Jon Courtenay Grimwood, British science fiction writer