John Jeffreys may refer to:
- John R.F. Jeffreys (1916–1944), British mathematician and World War II codebreaker
- John Gwyn Jeffreys (1809–1885), British conchologist and malacologist
- J. G. Jeffreys (1893–?), Australian schoolteacher who moved to England and founded Bryanston School in Dorset
- John Jeffreys (died 1689), British Member of Parliament for Brecon and Breconshire
- John Jeffreys (died 1715) (c. 1659–1715), British Member of Parliament for Breconshire, Marlborough and Radnorshire
- John Jeffreys (1706–1766), British Member of Parliament for Breconshire and Dartmouth
See also
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: