Oberelsaß (or Upper Alsace, French: Haute-Alsace) was the southern part of the historical region Alsace or Elsass. From 1871 to 1918, Bezirk Oberelsaß was a region (Bezirk) in the southern part of the province of Elsaß-Lothringen in the German Empire. The region corresponds exactly to the current French department of Haut-Rhin. Its capital was Colmar. It was divided into the districts (Kreise) of:

District of Upper Alsace
Bezirk Oberelsaß (in German)
District of Alsace-Lorraine
1871–1918
Flag of Oberelsaß
Flag
of Oberelsaß
Coat of arms

Upper Alsace district with its subdistricts in different colours (1890)
CapitalKolmar
Area 
• 1885
3.508 km2 (1.354 sq mi)
• 1910
3.508 km2 (1.354 sq mi)
Population 
• 1885
462.549
• 1910
517.865
History 
1870–1871
• Established
1871
• Disestablished
1918
Political subdivisions6 rural districts
Preceded by
Succeeded by
Haut-Rhin
Haut-Rhin
Today part ofFrance

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.

47°54′N 7°15′E / 47.900°N 7.250°E / 47.900; 7.250