Muszyński (feminine Muszyńska) is a Polish surname. Notable people with the surname include: Agnes Muszyńska (1935–2024), Polish-American mechanical engineer Kacper Muszyński (born 1997), Polish kickboxer Henryk Muszyński (born 1933), Polish Roman Catholic archbishop Marek Muszyński (born 1947), Polish politician Nick Muszynski (born 1998), American basketball player Robert Muczynski (1929–2010), American composer Wojciech Muszyński (born 1972), Polish historian and researcher