Karl Nabersberg (sometimes written as Carl Nabersberg, 11 July 1908 – 15 January 1946) was a German youth leader. Nabersberg was the son of a Crefeld shopkeeper. In 1923 he joined the Jugendorganisation, the forerunner of the Hitler Youth, in his home town. On 28 December 1925 he was admitted as a member of the National Socialist German Workers' Party (member number 26269) and as a member of the Sturmabteilung. After school, he studied law at the University of Cologne and Humboldt University of Berlin, although he never graduated. He participated in the founding of the Cologne local NSDAP and served from 1928 to 1929 as a high-school group leader of the National Socialist German Students' League as well as a group leader of the General Student Committee at Humboldt University.