| Diepenbeek | |
| Picture-Legend: | Diepenbeek town hall |
| Map: | Diepenbeek Limburg Belgium Map.svg |
| Map-Legend: | Location of Diepenbeek in Limburg |
| Arms: | Diepenbeek wapen2.svg |
| Flag: | Flag of Diepenbeek.svg |
| Arrondissement: | Hasselt |
| Nis: | 71011 |
| Mayor: | Rik Kriekels (N-VA) |
| Majority: | N-VA, CD&V, Open Vld, Groen |
| Postal-Codes: | 3590 |
| Telephone-Area: | 011 |
| Web: | www.diepenbeek.be |
| Coordinates: | 50.9°N 29°W |
Diepenbeek (in Dutch; Flemish pronounced as /ˈdipə(m)beːk/; Limburgan; Limburger; Limburgish: Diepenbik) is a municipality located in the Belgian province of Limburg near Hasselt. On January 1, 2012, Diepenbeek had a total population of 18,337. Its total area is 41.19km2 which gives a population density of 430/km2.
The municipality includes the communities and hamlets of Bijenberg, het Crijt, Dorpheide, Keizel, Lutselus, Pampert, Piannesberg, Reitje, Rooierheide, Rozendaal, and Zwartveld.
It is home to Hasselt University, slowly expanding towards Hasselt itself. The Limburg Science Park is located on the university campus.