The subject matter of the article concerns international regulations mentioned by Gaius in his Institutes. The work under discussion, which is also a textbook for students of law, refers in several fragments to the institutions respected at the international level – the status of the Latins, peregrini dediticii and sponsio, contracted at the international arena. The references made by Gaius to the above institutions was aimed at comparing them to private-law solutions, which was intended to facilitate understanding of the norms relating to individuals that were comprised in his work.