Mączyński is a Polish surname. Notable people with the surname include:
Czesław Mączyński (1881–1935), Polish officer and politician; Franciszek Mączyński (1874–1947), Polish architect; Jan Mączyński (c. 1520–c. 1587), Polish humanist and lexicographer; Krzysztof Mączyński (born 1987), Polish footballer.
See also