Jadwiga Falkowska codename: Jaga, Zdzisława, Ludwika, Zaleska (November 13, 1889 in Tver, Russia – August 7, 1944 in Warsaw, Poland) was a Polish teacher, physicist, social activist, Scoutmaster (harcmistrzyni) and one of the founders of Girl Scouting in Poland.
As a physicist and teacher, she worked at the Warsaw University of Technology and the Stefan Batory University in Vilnius, and taught physics at the lyceum at Krzemieniec. During the Second World War she served in the Polish resistance (Armia Krajowa). Jadwiga was murdered by RONA units during the first days of the Warsaw Uprising.