Franciszek Mączyński (21 September 1874 in Wadowice – 28 June 1947 in Kraków) was a Polish Art Nouveau architect. Prominent by 1910, his commissions include several major churches, and turn-of-the-century civic and cultural institutions designed in a Polish-influenced Secession style. In 1936 he was awarded the Golden Laurel of the Polish Academy of Literature.