| Official Name: | Willisau District |
| Native Name: | Wahlkreis Willisau |
| Settlement Type: | District |
| Subdivision Type3: | Capital |
| Area Total Km2: | 336.99 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Blank Name Sec1: | Municipalities |
| Blank Info Sec1: | 21 |
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. It has a population of (as of). 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:
| Municipality | Population | Area, km2 | |
|---|---|---|---|
| 3.6 | |||
| 6.8 | |||
| 5.7 | |||
| 23.9 | |||
| 4.2 | |||
| 12.5 | |||
| 8.1 | |||
| 10.2 | |||
| 31.3 | |||
| 37.9 | |||
| 30.4 | |||
| 3.7 | |||
| 17.6 | |||
| 27.0 | |||
| 6.2 | |||
| 12.3 | |||
| 2.9 | |||
| 8.3 | |||
| 13.9 | |||
| Total | 336.99[1] |
1992/97 survey gives a total area of 337.45km2 without including certain large lakes, while the 2000 survey includes lakes but due to other changes is slightly lower.