Anna Antonowicz, also known as Anja Katarzyna Antonowicz (born 22 December 1981 in Wloclawek, Poland) is a Polish actress.
She appeared in the comedy television series Bao-Bab, czyli zielono mi in 2003.
She received a German Television Award nomination for Best Supporting Actress (Beste Schauspielerin in einer Nebenrolle), in 2005, for "Bella Block" in the episode "Die Frau des Teppichlegers".
She has also starred in a recurring role in Lindenstraße as Nastya Pashenko.