Grosswangen is a municipality in the district of Sursee in the canton of Lucerne in Switzerland.

Of the rest of the land, 5.9% is settled (buildings or roads) and the remainder (0.5%) is non-productive (rivers, glaciers or mountains).

Of the agricultural land, 71.86% is used for farming or pastures, while 6.4% is used for orchards or vine crops.

Of the settled areas, 3.56% is covered with buildings, 0.3% is industrial, 0.2% is classed as special developments, 0.15% is parks or greenbelts and 1.73% is transportation infrastructure.

It consists of the sections of Innerdorf, Oberdorf, Roth, Sigerswil and Stettenbach.

Most of the population (as of 2000[update]) speaks German (93.6%), with Albanian being second most common ( 3.9%) and Portuguese being third ( 0.5%).

In the 2000 census[update] the religious membership of Grosswangen was; 2,358 (86.3%) were Roman Catholic, and 130 (4.8%) were Protestant, with an additional 18 (0.66%) that were of some other Christian faith.