Tyrfing was a magic sword in Norse mythology.
Tyrfing or Tirfing may refer to:
- Thyrfing, a viking metal band from Sweden
- Tirfing, an opera by Swedish composer Wilhelm Stenhammar
- , several ships of the Swedish Navy
- Super Sonic Strike Missile (3SM) Tyrfing, a missile under development
- SK Tirfing, a sports club in Harnäs, Sweden
See also
- Tyrfing Cycle, a collection of Norse legends