Sir William Duguid Geddes (21 November 1828 – 9 February 1900) was a Scottish scholar and educationalist, who promoted the cause of classical Greek at the University of Aberdeen. Geddes's classical translations, grammars and scholarship contributed to publications both written with collaborators and edited in series. One of the outstanding scholars of his generation in Scotland, he was the architect of the fusion of the modern University of Aberdeen and its High Victorian development.