Slawomir Jan Debski (born May 23, 1971 in Kraków) is a Polish historian, PhD (Hist.) who has served as director of Polish Institute of International Affairs from 2007 until 2010 and again since 2016.
He previously headed the The Centre for Polish-Russian Dialogue and Understanding (2011–2016), and was a member of the Polish-Russian Group for Difficult Matters.
He was assistant professor of the Cardinal Stefan Wyszynski University in Warsaw (2007–2010) and Warsaw University (2010–2014).