Zähringen is the name of an old German family that founded a large number of cities in what are today Switzerland and Baden-Württemberg.

The name is derived from the castle of Zähringen, now in ruins, in the village of that name, today a district of the city of Freiburg im Breisgau, which the dukes founded in 1120.

While the junior line that first assumed the title Duke of Zähringen, a cadet branch of the House of Baden, became extinct in 1218, the senior line persists and currently uses the title Margrave of Baden, Duke of Zähringen.

In the German language the word Zähringer is used for House of Zähringen in the same way as someone from New York is called a New Yorker.