Isabel Luberza Oppenheimer, Puerto Rican brothel owner and madam in barrio Maragüez, Ponce, Puerto Rico (died 1974)

Isabel Luberza Oppenheimer, better known as "Isabel la Negra", 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.