There have been three Baronetcies created for persons with the surname Seymour, two in the Baronetage of England and one in the Baronetage of the United Kingdom. One creation is extant as of 2008.
The Seymour Baronetcy, of Berry Pomeroy in the County of Devon, was created in the Baronetage of England on 29 June 1611 for Edward Seymour, High Sheriff and Member of Parliament for Devon. He was the eldest grandson of Edward Seymour, 1st Duke of Somerset (by his first marriage, to Catherine Fillol). The first six baronets, all named Edward, were all Members of Parliament; the first four lived at Berry Pomeroy Castle, purchased by the 1st Duke of Somerset. The fourth baronet left Berry Pomeroy for Bradley House, Maiden Bradley, Wiltshire, current seat of the Dukes of Somerset. The sixth baronet succeeded as eighth Duke of Somerset in 1750. For further history of the baronetcy, see this title
The Seymour Baronetcy, of Langley in the County of Buckingham, was created in the Baronetage of England on 4 July 1681 for Henry Seymour, son of the second son of the second baronet of Berry Pomeroy and Member of Parliament for Looe. Sir Henry Seymour never married, and the baronetcy became extinct at his death.