Luthern is a municipality in the district of Willisau in the canton of Lucerne in Switzerland.

Of the rest of the land, 3.5% is settled (buildings or roads) and the remainder (1.1%) is non-productive (rivers, glaciers or mountains).

Of the agricultural land, 46.83% is used for farming or pastures, while 1.01% is used for orchards or vine crops.

Of the settled areas, 1.56% is covered with buildings, 0.16% is industrial, 0.4% is classed as special developments, 0.03% is parks or greenbelts and 1.4% is transportation infrastructure.

[5] The municipality is located in the upper Luthern valley, in the northern Napfgebiet.

It consists of the village of Luthern and the hamlets of Luthernbad, Hofstatt and Flühlen as well as scattered farm houses.

In the 2000 census[update] the religious membership of Luthern was; 1,263 (83.1%) were Roman Catholic, and 173 (11.4%) were Protestant, with an additional 8 (0.53%) that were of some other Christian faith.

The driest month of the year is February with an average of 97 mm (3.8 in) of precipitation over 11.6 days.