Helfenburg
Helfenburg is
- the alternative name of several castles, see Helfenberg (disambiguation)
- the German name of several castles in the Czech Republic, see Helfenburk Castle
- the name of a castle near Terlan in South Tyrol, see Helfenburg (South Tyrol)
- the name of a noble family
- Thomas Albin von Helfenburg , Bishop of Olomouc
- Wenzel Albin von Helfenburg , Chancellor of the Rosenbergs