The Institute consists of five sections:
- Section of Grammar, Semantics and Pragmatics; head: prof. dr hab. Krystyna Waszakowa
- Section of Lexicology, Theoretical Stylistics and Culture of Polish Language; head: dr hab. Dorota Zdunkiewicz-Jedynak, prof. UW
- Section of History of Polish Language and Dialectology; head: doc. dr hab. Wanda Decyk
- Section of Computer Linguistics; head: dr hab. Magdalena Derwojedowa
- Section for Cyprian Norwid Dictionary; head: dr Tomasz Korpysz
Jan Baudouin de Courtenay Library of the Institute of Polish Language
Polish Language Counselling Service