Roman Grodecki (21 April 1889, in Rzeszów – 17 April 1964, in Kraków), Poraj coat of arms, was a Polish economic historian, a professor at the Jagiellonian University in Kraków, and a member of the Polish Academy of Arts and Sciences. Grodecki's scientific research centered on medieval Poland, particularly the history of Polish coinage, monetary history and monetary policy under the Piast dynasty. Although he was not a numismatic himself, Grodecki was widely read by coin collectors of his day, and he engaged in academic discussions and polemics with the noted Polish numismatic Marian Gumowski.