The article examines cooperation between cities from Poland and the South Caucasus, focusing on its forms and joint projects. The analysis is based on the results of a questionnaire sent out to Polish cities with a population of more than 50,000. It included questions about the nature of cooperation, initiatives underway, and the importance of regional issues in these relations. This allowed for a detailed understanding of their involvement in international contacts. The main purpose of the article is to show how Polish cities – through projects with cities in Armenia, Georgia, and Azerbaijan – support intercultural dialogue and regional development, highlighting the growing role of local diplomacy.