Cooperation between the Institute of Slavic Studies, Polish Academy of Sciences and foreign scholarly institutions on the basis of mutual agreements (fixed-term or open-ended):
- Belarusian State University (2009–2014),
- Kobe City University of Foreign Studies (2010–2015),
- the V. V. Vinogradov Russian Language Institute of the Russian Academy of Sciences in Moscow (2013–2017),
- the Sorbian Institute (Serbski instytut/Sorbisches Institut) in Bautzen/Budyšin, Germany (2014–2018),
- the Institute of Ethnology, Academy of Sciences of the Czech Republic in Prague (an open-ended agreement on mutual cooperation and exchange of scholarly information, including selected periodicals and publications),
- the Vasyl Stefanyk Precarpathian National University in Ivano-Frankivsk, Ukraine (open-ended agreement),
- the Yuriy Fedkovych Chernivtsi National University, Ukraine (open-ended agreement concluded in 2016),
- the Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University, Ukraine (open-ended agreement concluded in 2017).