Dialectology and Language History (head Dr. philol. Anna Stafecka) Onomastics (head Dr. philol. Renāte Siliņa-Piņķe) Latvian Grammar (head Dr. philol. Juris Grigorjevs) Lexicology and Lexicography (head Dr. philol. Agris Timuška) Sociolinguistics (head Dr. habil. philol. Ina Druviete) Terminology (head Dr. philol. Regina Kvašytė)