Institutional cooperation
- University of Warsaw (prof. Agata Nalborczyk)
- University of Lodz (prof. Marek Dziekan)
- Adam Mickiewicz University (prof. Henryk Jankowski)
- University of Bialystok (dr Artur Konopacki)
- University of Warmia and Mazury (dr Michał Łyszczarz)
- Sorbonne Université (prof. Nicolas Le Roux)
- National Academy of Sciences of Belarus (doc. dr Michail Tarelka)
- National University of Ostroh Academy (doc. dr Mykhaylo Yakubovych)
- Belarusian State University (doc. dr Irina Synkova)
- Institute of Lithuanian Language in Vilnius (prof. Segejus Temčinas, doc. dr Galina Miškinienė)
- Russian Academy of Sciences (prof. Efim Rezvam)
- Berlin-Brandenburg Academy of Sciences and Humanities (prof. Michael Marx)
- Ecole Pratique des Hautes Etudes, France (prof. Nuria de Castilla)
- Institute of Literary Research of the Polish Academy of Sciences (Department of the Dictionary of the 16th-Century Polish Language), Piekary 8, 87-100 Toruń (dr Patrycja Potoniec)
- Tatar Organizations: Muslim Religious Union in the Republic of Poland (Muzułmański Związek Religijny w RP), Association of Tatars of the Republic of Poland (Związek Tatarów RP), Tatar Community of Vilnius County
- Karaim Organizations: Związek Karaimów Polskich, Fundacja Karaimskie Dziedzictwo