Lord Webb John Seymour FRS FSA Scot FRSE FLS FGS (7 February 1777 – 15 April 1819) was an English aristocrat and amateur geologist.
On 29 January 1794 Webb John Seymour matriculated at Christ Church, Oxford and on 15 December 1797 graduated there M.A.
After graduation, he went to Edinburgh and became friends with Francis Horner, the philosopher Thomas Brown and John Playfair.
Seymour also learned mathematics from Playfair and studied political economy as well as Bacon's De Augmentis Scientiarum and Novum Organum.
In 1805 he returned to Edinburgh and settled there with his brother at 2 Abercromby Place[5] until the end of his life, with occasional trips to England.