Lige ( lee-EZH, lee-AYZH, French: [lj] (listen), locally [li.e]; Walloon: Ldje [lit]; Dutch: Luik [lyk] (listen); German: Lttich [lt] (listen); Latin: Leodium) is a major city and municipality of Wallonia and the capital of the Belgian province of Lige.

The city is situated in the valley of the Meuse, in the east of Belgium, not far from borders with the Netherlands (Maastricht is about 33 km (20.5 mi) to the north) and with Germany (Aachen is about 53 km (32.9 mi) north-east). In Lige, the Meuse meets the river Ourthe. The city is part of the sillon industriel, the former industrial backbone of Wallonia. It still is the principal economic and cultural centre of the region.

The municipality consists of the following districts: Angleur, Bressoux, Chne, Glain, Grivegne, Jupille-sur-Meuse, Lige, Rocourt, and Wandre. In November 2012, Lige had 198,280 inhabitants. The metropolitan area, including the outer commuter zone, covers an area of 1,879 km2 (725 sq mi) and had a total population of 749,110 on 1 January 2008. This includes a total of 52 municipalities, among others, Herstal and Seraing. Lige ranks as the third most populous urban area in Belgium, after Brussels and Antwerp, and the fourth municipality after Antwerp, Ghent and Charleroi.

On 13 December 2011, a murder–suicide attack took place in the city of Liège in the Wallonia region of Belgium.The attacker, 33-year-old Nordine Amrani, threw grenades and fired an FN FAL rifle at civilians on Saint-Lambert Square. The attack killed six and left 125 others injured, seven of them seriously. Amrani then killed himself with a revolver. Earlier that day, he had also murdered a woman in his house.

The attack occurred on the same day and at the same hour as the 2011 Florence shootings.