Namur, or Namen in Dutch, is the capital of Wallonia, one of the three Regions of Belgium. The city has a population of about 110,000, making it the third largest city in Wallonia. Namur is at the confluence of the Sambre and Meuse rivers.

The town began as an important trading settlement in Celtic times, straddling east–west and north–south trade routes across the Ardennes. The Romans established a presence after Julius Caesar defeated the local Aduatuci tribe.

Namur came to prominence during the early Middle Ages when the Merovingians built a castle or citadel on the rocky spur overlooking the town at the confluence of the two rivers. In the 10th century, it became a county in its own right. The town developed somewhat unevenly, as the counts of Namur could only build on the north bank of the Meuse - the south bank was owned by the bishops of Liège and developed more slowly into the town of Jambes (now effectively a suburb of Namur). In 1262, Namur fell into the hands of the Count of Flanders, and was purchased by Duke Philip the Good of Burgundy in 1421.

After Namur became part of the Spanish Netherlands in the 1640s, its citadel was considerably strengthened. Louis XIV of France invaded in 1692, capturing the town and annexing it to France. His renowned military engineer Vauban rebuilt the citadel. French control was short-lived, as William III of Orange-Nassau captured Namur only three years later in 1695 during the War of the Grand Alliance. Under the Barrier Treaty of 1709, the Dutch gained the right to garrison Namur, although the subsequent Treaty of Utrecht of 1713 gave control of the formerly Spanish Netherlands to the Austrian House of Habsburg. Thus, although the Austrians ruled the town, the citadel was controlled by the Dutch. It was rebuilt again under their tenure.

General Jean-Baptiste Cyrus de Valence's column laid siege to the city on 19 November 1792 during the War of the First Coalition and, after 12 days, the city surrendered on 1 December and its whole garrison of 3,000 men was taken prisoner. France invaded the region again in 1794, annexing Namur and imposing a repressive regime. After the defeat of Napoleon in 1815, the Congress of Vienna incorporated what is now Belgium into the United Kingdom of the Netherlands. Belgium broke away from the Netherlands in 1830 following the Belgian Revolution, and Namur continued to be a major garrison town under the new government. The citadel was rebuilt yet again in 1887.

Namur was a major target of the German invasion of Belgium in 1914, which sought to use the Meuse valley as a route into France. On August 21, 1914, the Germans bombarded the town of Namur without warning. Several people were killed. Despite being billed as virtually impregnable, the citadel fell after only three days' fighting and the town was occupied by the Germans for the rest of the war. Namur fared little better in World War II; it was in the front lines of both the Battle of the Ardennes in 1940 and the Battle of the Bulge in 1944. The town suffered heavy damage in both wars.