Hünenberg is a municipality in the Canton of Zug in Switzerland .

Hünenberg is first mentioned in 1173 as de Hunberg, though this document is considered a forgery. In 1185 it was mentioned as de Hunoberg and in 1239 as de Hunaberc.

Hünenberg has an area, as of 2006, of 18.4 km2 (7.1 sq mi). Of this area, 63.4% is used for agricultural purposes, while 17% is forested. Of the rest of the land, 12.3% is settled (buildings or roads) and the remainder (7.3%) is non-productive (rivers, glaciers or mountains).