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.
She is also known as Anja Antonowicz.