John Thomson Mason (disambiguation)

John Thomson Mason may refer to:


 * John Thomson Mason (1765–1824), American jurist and Attorney General of Maryland in 1806
 * John Thomson Mason (1787–1850), American lawyer, United States marshal, Secretary of Michigan Territory from 1830 through 1831
 * John Thomson Mason, Jr. (1815–1873), U.S. Representative from Maryland, son of John Thomson Mason (1765–1824)