Arkadiusz Mularczyk (born February 4, 1971 in Racibórz) is a Polish politician. He was elected to the Sejm on September 25, 2005 getting 9566 votes in 14 Nowy Sącz district, candidating from the Law and Justice list.On 4 November 2011 he, along with 15 other supporters of the dismissed PiS MEP Zbigniew Ziobro, left Law and Justice on ideological grounds to form a breakaway group, United Poland.