Antoni Mężydło [anˈtɔnʲi mɛ̃ʐɨdwɔ] (born 23 August 1954 in Lubawa) is a Polish politician. He was elected to the Sejm on October 21, 2007, receiving 42,052 votes in the 5 Toruń district, running on the Civic Platform list. He is active in the Central European Initiative. He is included in the lists of Sejm 2001–2005 and Sejm 2005–2007.