Mostowiak is a surname commonly associated with Polish heritage. It is often found in Poland and among Polish communities worldwide. The name may be linked to various individuals in Polish culture, including characters in literature and television. In popular culture, the name Mostowiak is notably recognized from the Polish television series Klan. The show features the Mostowiak family, highlighting their daily lives, relationships, and challenges. This portrayal has contributed to the name's familiarity in Polish media.