George Bax Holmes (3 May 1803 – 31 March 1887) was an English fossil collector. Born into a wealthy Quaker family in Horsham, Sussex, he was the discoverer of the 'Great Horsham Iguanodon'. Having started life pursuing a medical career he was able to devote more time to his fossil hunting from 1834. It was in that year that his father died and left him considerable property interests. As early as 1836 he contributed to Howard Dudley's history of Horsham with a paragraph on his work.