Building B houses a modernly equipped,air-conditioned Auditorium B (Aula B) seating 289, and also the Pawłowski Auditorium, where doctoral defences take place. The Careers Centre is also located here, so are the "Silesianie" Student Dance and Song Ensemble and the PANEUROPA Student Organization. It is a four-storey building, with a passage way connecting it to building A. It houses 20 rooms with Internet access, including: an assembly hall, 7 lecture halls and 12 course rooms. There is also a food shop.

It is situated at Bogucicka street no. 3a.