There are many diseases that the veterinarian may acquire due to the peculiar nature of his work. It is the purpose of this paper to catalogue these diseases in a concise though useful manner in order that they might be recognized, be given proper attention and that adequate prophylactic measures be determined. The discussion is based on a study by Professor Axel Thomsen of the State Veterinary Serum Laboratory at Copenhagen, the summary of which appeared in the Veterinary Journal (94:4, 1938, pp. 140-157). The study was made by sending a questionnaire to the veterinarians of Denmark, and the conclusions were drawn from the ensuing correspondence. . Though it is fully appreciated that the data are Danish and also subject to scientific inexactitude, it is deemed, nevertheless, of substantial value to American veterinarians.