| Conflict: | Siege of Maastricht |
| Partof: | the War of the Austrian Succession |
| Place: | Maastricht, Dutch Republic |
| Map Type: | Netherlands#Europe |
| Map Relief: | yes |
| Result: | French victory |
| Commander1: | Maurice de Saxe |
| Commander2: | Hobbe Esaias van Aylva |
| Strength1: | 80,000 men |
| Casualties1: | 2,000 casualties |
| Casualties2: | 839-2,000 casualties 600 guns captured |
The siege of Maastricht took place in April–May 1748 during the War of the Austrian Succession. A French force under the overall command of Maurice de Saxe besieged and captured the Dutch barrier fortress of Maastricht in the final few months of the campaign in the Low Countries. After a relatively long siege the garrison of Maastricht capitulated and marched out with the honours of war. Maastricht was returned along with France's conquests in the Austrian Netherlands according to the Treaty of Aix-la-Chapelle signed in 1748.
Among the defenders were the Austro-Walloon Regiment of Los Rios, commanded by its Colonel Jean Charles Joseph, Count of Merode, Marquis of Deynze ; Charles, 5th Duke of Arenberg (Jean Charles' brother-in-law)