Gelfingen is a former municipality in the district of Hochdorf in the canton of Lucerne in Switzerland.

Of the rest of the land, 9.6% is settled (buildings or roads) and the remainder (0.3%) is non-productive (rivers, glaciers or mountains).

On 21 May 2006 an attempt to merge the Hitzkirch and the surrounding 10 municipalities failed, when five of the eleven voted against the merger.

[3] A less ambitious merger was then proposed and accepted, with the municipalities of Gelfingen, Hämikon, Mosen, Müswangen, Retschwil and Sulz joining Hitzkirch.

Most of the population (as of 2000[update]) speaks German (94.1%), with English being second most common ( 1.4%) and Portuguese being third ( 1.0%).