Several departments of the Institute carry out international cooperation. The International Cooperation Department focuses on long-term international collaborations and is active within the On the Move and PACE.V4 (Performing Arts Central Europe – Visegrad Countries Focus) networks. The Publishing Department carries out projects that broadly cover publications and cooperates with the SIBMAS network . The Barbara Krasnodębska Documentation Unit collaborates with the ENICPA network (European Network of Information Centres for Performing Arts). The Department of Aid and Development Programmes has been implementing residencies for artists from Ukraine and (previously) Belarus in Poland since 2021. The e-teatr portal has its page as Polishstage.pl.

The activities of the International Cooperation Department promote the presentation of Polish achievements abroad and focus on long-term international cooperation, both in terms of personal and institutional relations. The Department is involved in various formats of international cooperation, including participation in and organisation of conferences and symposia, publication of books, organisation of exhibitions and other art shows. Its activities include offering residencies and workshops for young artists, conducting laboratory projects, and organising theatre showcases and presentations. The projects undertaken by the International Cooperation Department in collaboration with foreign partners include artistic and research activities, with a particular focus on interdisciplinary projects that combine theatre work with rapidly expanding areas of the arts, such as new media art and innovative set design practices. These activities encourage the long-term development of international artistic teams and specialised research platforms. We also identify emerging needs being debated internationally and advocate for specific professional groups in the theatre ecosystem.