| Geleenbeek | |
| Map: | Kaart met plateaus en dalen Zuid-Limburg.PNG |
| Mouth Location: | Meuse |
| Mouth Coordinates: | 51.1199°N 5.8552°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Netherlands |
| Subdivision Type2: | Province |
| Subdivision Name2: | Limburg |
| Length: | 44.7km (27.8miles) |
The Geleenbeek (in Dutch; Flemish pronounced as /ɣəˈleːmbeːk/; Limburgan; Limburger; Limburgish: Gelaenbaek in Limburgan; Limburger; Limburgish pronounced as /ɣəˈlɛːmbɛːk/) is a river in Limburg, the Netherlands. Its source is near the village Benzenrade, part of the city of Heerlen. It flows generally northwest, along Nuth, Schinnen, Spaubeek, turns north at Geleen, flows through the centre of Sittard, and further north through Nieuwstadt until it flows into a branch of the Meuse at Stevensweert.
Its Latin name is "Glana", which means "bright brook".