Thomas Johnes (disambiguation)

Thomas Johnes may refer to:
 * Thomas Johnes (1748–1816), Member of Parliament, landscape architect and social benefactor
 * Thomas Johnes (priest) (1749–1826), Archdeacon of Barnstaple from 1807 to 1826
 * Thomas Johnes (died 1780) (c. 1721–1780), Welsh politician
 * Thomas Johnes (the elder) (died c. 1734), Welsh politician