- Scientific institutions cooperating on the basis of agreements between the Institute of Slavic Studies of PAS, international partners and other national academic centres: Belarus
- Scientific institutions cooperating without agreements: Croatia
The Center for the Belarusian Culture, Language and Literature Researches of the National Academy of Sciences of Belarus (before: The Yakub Kolas and Yanka Kupala Institute of Language and Literature of the National Academy of Sciences of Belarus) (Minsk) The Czech Republic
The Institute of the Czech Language of the Academy of Sciences of the Czech Republic (Prague) Macedonia
The Research Centre for Areal Linguistics of the Macedonian Academy of Sciences and Arts (Skopje) Germany
The Sorbian Institute (Bautzen) Slovakia
Ľ. Štúr Institute of Linguistics of the Slovak Academy of Sciences (Bratislava) Ukraine
The Institute of the Ukrainian Language of the National Academy of Sciences of Ukraine (Kiev)
The Office of the Representative of the Polish Minority in Zagreb (Zagreb) Estonia
The Department of Slavic Philology of the University of Tartu (Tartu) Poland
The Department of Belarusian Studies at the University of Warsaw (Warsaw)
The Institute of Information Science and Book Studies at the University of Warsaw (Warsaw)
The Institute of Polish Philology at Adam Mickiewicz University (Poznan)
The Institute of Polish Philology at Maria Curie-Skłodowska University (Lublin)
The Institute of Slavic Studies at the University of Wrocław (Wroclaw)
The Sejm Library (Warsaw)
The Slavic Foundation (Warsaw)
The Warsaw Scientific Society (Warsaw) Russia
The Faculty of Foreign Languages and Area Studies at Lomonosov Moscow State University (Moscow)
The Faculty of History at Lomonosov Moscow State University (Moscow)
The Faculty of Philology at Lomonosov Moscow State University (Moscow)
The Institute of Slavic Studies of the Russian Academy of Sciences (Moscow)
International organisations
The Commission on Linguistic Bibliography of the International Committee of Slavists
The Terminological Commission of the International Committee of Slavists