John Wilcotes (died 1422), of Great Tew, Oxfordshire, was an English politician.
Wilcotes is thought to have been a younger brother of William Wilcotes. John married a woman named Alice, circa 1396. She was probably a widow from Chelmscote of Great Tew. She died in 1410. Wilcote's second wife was Elizabeth Cheyne, daughter of Richard Cheyne of Shurland, Isle of Sheppey, Kent, and Margery Cralle of Cralle, Sussex, a sister of William Cheyne. The Cheynes were a prominent Kentish family. Elizabeth was also a widow, having previously been married to Sir William Septvance of Milton near Canterbury. He had died in 1407. They had two daughters, and he had an illegitimate son, Thomas Wilcotes.
He was appointed High Sheriff of Oxfordshire and Berkshire for 1402, 1408, 1416, 1420 and from May 1422 to his death later that year. He also served as High Sheriff of Gloucestershire from November 1420 to May 1422.