In recent years, there has been an increase in the international activities of local governments in Turkey. Local governments conduct international activities by establishing sister city relations, becoming members of international organizations, and signing cooperation protocols, and memoranda of understanding/goodwill letters. The present study aimed to investigate the activities regarding the international activities of local governments in Turkey. In the study, lectures on international activities, following the description of theoretical, historical and legal backgrounds of international relations, the statistical data on the activities of local governments in Turkey are presented, and some observations and assessments were made through the information obtained from the relevant unit managers of six metropolitan municipalities in Turkey which have the strongest memberships in international organizations. As a result, it was determined that there has been an increase in the number of international activities of local governments in Turkey, memberships to these organizations have been effectively carried out, the municipalities have become a member of international organizations which are expected to benefit from, a purpose was determined by these municipalities before becoming a member, and these municipalities have become stakeholders of international organizations and have gained significant benefits through these joint projects.