Helsing or Hellsing may refer to:
- Helsing (also styled Hellsing) a Swedish surname/soldier's name referring to the Swedish province (landskap) Hälsingland. Someone from Hälsingland is called a "Hälsinge", with the old (from the 17th to the 18th century) spelling that is "Hellsing" or "Helsing" (from Helsingland/Helsingeland)
- Hellsing, a Japanese manga series