Isabel Luberza Oppenheimer
- Category : 1901-births
- Type : MGP
- Profile : 4/1 - Opportunistic / Investigator
- Definition : Split - Large
- Incarnation Cross : JX Stimulation
Better known as "Isabel la Negra", she was a Puerto Rican brothel owner and madam in barrio Maragüez, Ponce, Puerto Rico. Her name and her brothel, Elizabeth's Dancing Club, became part of Puerto Rican folklore both during her life and posthumously.
Isabel la Negra was shot dead on 4 January 1974, an innocent bystander of a drug-related homicide which occurred in one of her establishments. She was 72 years old.