Engis (French pronunciation: [ɑ̃ʒi]; Walloon: Indji) is a municipality of Wallonia located in the province of Liège, Belgium.

[2] The municipality consists of the following districts: Clermont-sous-Huy, Engis and Hermalle-sous-Huy.

In 1829, in this village, Philippe-Charles Schmerling discovered the first Neanderthal ever, Engis 2, the damaged skull of a young child.

[3] In late 1930 and early 1931, several thousand cases of acute pulmonary attacks occurred in the Meuse valley, centered on Engis, and 60 people died.

A commission of inquiry set up by the Belgian government concluded that the cause was poisonous waste gases, primarily sulfur dioxide, emitted by the many factories in the valley and the furnaces used by the population, in conjunction with unusual climatic conditions coupled with the unique topographic characteristics of the area.