John Seymour
John Seymour may refer to:
Courtiers and politicians
- John Hayward (MP for Bridport), alias Seymour, member of parliament for Bridport, U.K.
- John Seymour (MP for Bristol), member of parliament for Bristol, U.K.
- John Seymour (1425–1463), British landowner and member of parliament
- John Seymour (died 1464), British knight and member of parliament
- John Seymour (died 1491), member of the British landed gentry and grandfather of Queen Jane Seymour
- Sir John Seymour (1474–1536), father of Queen Jane Seymour, third wife of Henry VIII of England
- John Seymour (died 1567), member of parliament for Great Bedwyn, U.K.
- John Seymour (died 1552), member of parliament for Wootton Bassett, U.K.
- John Seymour (died 1618), member of parliament for Great Bedwyn, U.K.
- John Seymour, 4th Duke of Somerset, British peer and member of parliament
- John Seymour (Maryland governor), royal governor of the Maryland colony in the Americas, then part of England
- John Seymour (Gloucestershire MP), member of parliament for Gloucestershire
- John Seymour (California politician), senator from California, U.S.
- John Seymour, 19th Duke of Somerset, British landowner and elected hereditary peer
- John Webb Seymour, English aristocrat and amateur geologist
Others
- John Seymour (priest), Canon of Windsor
- John Seymour (cricketer), British cricketer
- John Alfred Seymour, Canadian Presbyterian minister in Australia
- John Laurence Seymour, American composer
- John Seymour (author), British author and influential figure in the self-sufficiency movement