Shor was born in Minneapolis, Minnesota. She has described herself as "half Jewish but not really religious" (her father was Jewish). She speaks fluent Yiddish as well as Italian. Her parents divorced when she was 7, and she alternated between living in Turin, Italy (with her mother), and suburban Detroit (with her father). She later attended the University of Michigan where she received her B.F.A. in drama.
Shor has starred or appeared in the following:
- Hedwig and the Angry Inch
- Law and Order: Criminal Intent
- My Name is Earl
- Mildred Pierce
- Good Christian Belles
Miriam Shor on IMDB.