Willisau District is one of the five districts (German: Ämter) of the German-speaking Canton of Lucerne, Switzerland.

Its capital is the town of Willisau.

In 2013 its name was changed from Amt Willisau to Wahlkreis Willisau as part of a reorganization of the canton.

A sixth Wahlkreis was created, but in Willisau everything else remained essentially unchanged.

Willisau District consists of the following municipalities: