Frosti may refer to:
- Frost, a mythical Finnish leader - see Fornjót
- Frosti Jonsson (born 1972), Icelandic musician known as Bistro Boy
- Frosti Sigurjónsson (born 1962), Icelandic politician
- "Frosti", a track on the 2001 Björk album Vespertine
- a prostitute
See also
- Frosty (disambiguation)