Stanisław Moniuszko (May 5, 1819 – June 4, 1872) was a Polish composer, conductor and teacher. He wrote many popular art songs and operas, and his music is filled with patriotic folk themes of the peoples of the former Polish–Lithuanian Commonwealth (predominantly the Poles, Lithuanians and Belarusians). Since the 1990s Stanisław Moniuszko is being recognized in Belarus as an important figure of Belarusian culture. Moniuszko's operas are regularly performed at the Belarusian National Opera.