Jules Desneux (20 April 1885 – 4 January 1962) was a French-Belgian entomologist, dermatologist, art historian, and numismatist. He specialized in the study of termites and also took an interest in termitophilic and myrmecophilic beetles, particularly the Paussinae. He was among the first to make use of radiology to study the structure of termite nests.