ABSTRACTHume was not a philosopher famed for what are sometimes called ‘ontological commitments'. Nevertheless, few contemporary scholars doubt that Hume was an atheist, and the present essay tenders the view that Hume was favourably disposed to the 'vital materialism' of post-Newtonian natural philosophers in England, Scotland and France. Both internalist arguments, collating passages from a range of Hume's works, and externalist arguments, reviewing the likely sources of his knowledge of ancient materialism and his association with his materialistic contemporaries are employed.