Stefan Kisielewski (March 7, 1911 in Warsaw – September 27, 1991 in Warsaw, Poland), nicknames Kisiel, Julia Holynska, Teodor Klon, Tomasz Stalinski, was a Polish writer, publicist, composer and politician, and one of the members of Znak, one of the founders of the Unia Polityki Realnej, the Polish libertarian and conservative political party.