A proposal for the harmonization of quality assurance of Veterinary Services at the international level is made. This proposal is based on the hypothesis of accreditation of Veterinary Services according to the 9000 series of the International Standards Organisation (ISO) standards. An example of a way in which ISO 9000 standards can be used within the context of management of Veterinary Services is given, together with an explanation of the possible role of the Office International des Epizooties in ensuring fairness of evaluations of Veterinary Services at the international level.