Kaysersberg (French: [kajzœʁsbɛʁɡ]; German: Kaisersberg [ˈkaɪzɐsbɛʁk] ⓘ; Alsatian: Kaiserschbarig) is a historical town and former commune in Alsace in northeastern France.

The high fortress that dominates the town serves as a reminder of both its strategic importance and its warlike past.

[2] The town was first mentioned in 1227, when Frederick II, Holy Roman Emperor purchased the castle and gave orders to refortify it.

Kaysersberg lies about 12 kilometres (7 mi) northwest of Colmar, on the eastern slopes of the Vosges mountains, on the river Weiss.

The first vines were brought here in the 16th century from Hungary, and wine production is still an important aspect of the town's economy today.