The primary objective of this article is to analyse the international activities (paradiplomacy) of Polish voivodeships through the lens of the system for managing sustainable regional development. Paradiplomacy serves as both a tool for carrying out public tasks of a regional nature and an instrument for socio-economic and cultural development, for which voivodeship self-government is responsible in Poland. Another aim of the article is to present the geographical directions of voivodeships’ paradiplomacy, which, in addition to European regions, also includes partners from outside Europe. Thus, the article offers an academic reflection on the issue outlined

in the title, approached from the perspective of social sciences and the discipline of political science and administration.