Altdorf (), a compound word in German consisting of old and village, may refer to:
France Altdorf, Bas-Rhin
Germany Altdorf bei Nürnberg, a city in Bavaria Altdorf, Lower Bavaria, a municipality in Landshut, Bavaria Altdorf, Böblingen Altdorf, Esslingen Altdorf, Rhineland-Palatinate, a municipality in Südliche Weinstraße Weingarten (Württemberg), formerly Altdorf
Switzerland Altdorf, Jura or Bassecourt Altdorf, Schaffhausen Altdorf, Uri
Poland (German name) Stara Wieś, Pszczyna Stara Wieś, Silesian Voivodeship
United States Altdorf, Wisconsin
Other uses Altdorf (Warhammer), the capital of the Empire (a polity analogous to the Holy Roman Empire) in the universe of Warhammer Fantasy University of Altdorf, a former university in Altdorf bei Nürnberg, Germany
See also Altendorf (disambiguation) Altorf, a commune in Grand-Est, France