Altwis is a former municipality in the district of Hochdorf in the canton of Lucerne in Switzerland. On 1 January 2021 the former municipality of Altwis merged into the municipality of Hitzkirch.

Hitzkirch is a municipality in the district of Hochdorf in the canton of Lucerne in Switzerland. On 1 January 2009, Gelfingen, Hämikon, Mosen, Müswangen, Retschwil and Sulz joined Hitzkirch. On 1 January 2021, Altwis merged into Hitzkirch.