Welfen (disambiguation)
Welfen stands for:
- Welfs , high nobility
- Guelphs , papal partisans in medieval Italy, see Ghibellines and Guelphs
- AV Welfen Zurich , student association from Zurich, Switzerland
- Welfen SC Braunschweig , sports club from Braunschweig, Germany, see TuRa Braunschweig