Catherine Seymour may refer to:
- Catherine Seymour, born Catherine Parr, Queen of England
- Catherine Seymour, born Lady Catherine Grey (1540–1568), sister of Lady Jane Grey, claimant to the throne of England
- Catherine Seymour, born Catherine Filliol, wife of Edward Seymour, 1st Duke of Somerset
This disambiguation page lists articles about people with the same name.
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