Eupen (German: [ˈɔʏpn̩] ⓘ, French: [øpɛn] ⓘ, Dutch: [ˈøːpə(n)] ⓘ; Ripuarian: Ööpe [ˈøːpə]; Walloon: Neyåw [nɛjɑːw]; former French: Néau [neo]) is the capital of German-speaking Community of Belgium and is a city and municipality in the Belgian province of Liège, 15 kilometres (9 miles) from the German border (Aachen), from the Dutch border (Maastricht) and from the "High Fens" nature reserve (Ardennes).

In 1919, after the First World War, the Treaty of Versailles transferred Eupen and the nearby municipality of Malmedy from Germany to Belgium.

The city has a small university, the Autonome Hochschule Ostbelgien [de; nl], offering bachelor's degrees in Education and Nursing.

Habsburg Holy Roman Emperor Charles V granted Eupen the privilege to conduct two markets per year in 1544.

Eupen obtained its own court of law in 1648, and in 1674 received city rights, giving it greater recognition and autonomy.

After the First World War, the 1919 Treaty of Versailles transferred Eupen and the nearby municipality of Malmedy from Germany to Belgium.

In 1980, following a state reform ten years earlier, the German-Speaking Community of Belgium was established and Eupen was named as its capital.

Eupen is also wetter and cloudier than Liège in the valley to the west, as a result of orographic lift due to the elevation change.

In 2010, after winning a play-off, the side became the first club from the German-speaking Community to reach the country's top flight, then known as the Belgian Pro League.