John Wickham may refer to:
John Wickham (British Army officer) (born 1897), British brigadier, on List of British generals and brigadiers John Wickham (attorney) (1763–1839), 18th-century American attorney John A. Wickham, Jr. (1928–2024), 20th-century American general John Clements Wickham (1798–1864), 19th-century British ship captain, later a police magistrate in Brisbane, Queensland, Australia John L. C. Wickham (1919–2018), Western Australian Supreme Court judge John Wickham (urologist), 1927–2017 John Wickham Rhodes (1920–1996) John Wickham Legg (1843–1921), English physician and theologian John Wickham Flower (1807-1873), British solicitor, amateur geologian John Wickham Steeds (* 1940), British physicist John Wickham Griffith (1795–1859), English cleric Henry John Wickham (1829–?), English cleric
John Wickham House, building of 1812 John Wickham (print), print by Max Rosenthal, 1917, Cleveland Museum of Art John Wickham Barnes, F.R.C.S., L.S.A, scientific article, 1899