John Seymour (disambiguation)
John Seymour is the name of the following people:
- John Seymour (Governor) (1649–1709), Governor of the Province of Maryland
- John Seymour (1914-2004), British farmer and author
- John Seymour, 19th Duke of Somerset (born 1952), British peer and landowner
- John F. Seymour (* 1937), American real estate investor and politician (Republican Party)