Upper Alsace (German: Oberelsaß, French: Haute-Alsace) was the southern part of the historical region Alsace. From 1871 to 1918, Bezirk Oberelsaß was a district (Bezirk) in the southern part of the province of Alsace–Lorraine in the German Empire. The district was formed on 30 December 1871 from the former French département of Haut-Rhin, to which it corresponds exactly. Its capital was Colmar. It was divided into the districts (Kreise) of:
Altkirch within the Sundgau
Colmar
Gebweiler (Guebwiller)
Mülhausen (Mulhouse)
Rappoltsweiler (Ribeauvillé)
Thann
The flag of Oberelsaß is a yellow bar on a red field decorated on each side with three crowns. The combination of this flag with that of Unterelsaß forms the flag of modern Alsace.