Stein Grieg Halvorsen
- Category : 1909-births
- Type : MGE
- Profile : 5/1 - Heretical / Investigator
- Definition : Split - Small (15,29,44)
- Incarnation Cross : LAX Limitation 2
Norwegian theatre actor. He was the son of composer Johan Halvorsen and Anna "Annie" Grieg who was a niece of composer Edvard Grieg. He was the father of comedian and musician Stein Johan "Steinjo" Grieg Halvorsen (b. 1975).
Grieg Halvorsen died on 11 November 2013, in Oslo, aged 104.