| Release Date | 24 April 1981 |
| Tagline | Crime Will No Longer Roam the Streets. |
| Genre | Crime, Drama |
| Country | USA |
| Filming Locations | New York City, New York, USA |
| Language | English |
| Sound Mix | Mono |
| Color | Color |
| Film Type | Feature |
| Film Class | Crime Thriller |
| Themes | Out For Revenge, Crime Sprees, Rape & Sexual Abuse |
| Tones | Angry, Lurid, Visceral, Harsh, Tense, Disturbing |
| Tags | Gun, Killing Spree, Mute, Rape, Revenge, Victim, Woman |
Ms. 45, also known as Angel of Vengeance, is a 1981 American low-budget exploitation film directed by Abel Ferrara and starring Zoë Tamerlis Lund. Inspired by films such as Death Wish and Thriller - en grym film, the film is a rape and revenge story about Thana, a mute woman who becomes a misandristic spree killer (not strictly a vigilante) after she is raped twice in one day when coming home from work. It was critically maligned on its theatrical release, but is now generally highly-regarded among fans of underground film.