| Honorific Prefix: | His Grace |
| The Duke of Somerset | |
| Order: | 9th |
| Office: | Duke of Somerset |
| Father: | Edward Seymour |
| Mother: | Mary Webb |
| Term Start: | 1757 |
| Term End: | 1792 |
| Successor: | Webb Seymour |
| Birth Date: | 2 January 1717 |
| Death Date: | 2 January 1792 |
Edward Seymour, 9th Duke of Somerset, etc. (2 January 1717 - 2 January 1792) was the eldest son of Edward Seymour, 8th Duke of Somerset and his wife, the former Mary Webb. He was also a baronet.
He was baptized on 27 January 1717 at Easton in Wiltshire.[1] He succeeded his father as Duke of Somerset on 12 December 1757. He was named a Privy Councillor by George II and in 1783 was awarded an annual pension, which along with his financial management and reclusiveness contributed to the growth of his fortune.[2]
He died on his 75th birthday, unmarried and childless, and was interred on 11 January 1792 at Maiden Bradley, near Warminster, Wiltshire. His titles passed to his brother Webb Seymour.