Susteren (population: 13,025) is a town in the southeastern Netherlands, in the province of Limburg. The municipality covers an area of 28.34 km² (of which 0.70 km² water).

The former municipality of Susteren also includes the following towns, villages and townships: Baakhoven, Dieteren, Heide, Illikhoven, Kokkelert, Nieuwstadt, Oevereind, Oud-Roosteren, Roosteren, Visserweert and has merged with Echt to form Echt-Susteren.