Vanessa del Rio was born Ana Maria Sanchez and raised in Harlem, New York, the daughter of immigrants from Cuba and Puerto Rico. Her mom would take her to see movies of Isabel Sarli whom Vanessa credits as a big influence in her life. She left a job as a computer programmer in her early 20s and became "a waitress, then barmaid, then go-go dancer" becoming a porn actress because "they paid $150 a day, which was exactly my half of the rent".
Del Rio began appearing in adult films in 1974. In the span of about 25 years, del Rio has appeared in over 100 pornographic films and in several music videos, notably "Get Money" by Junior M.A.F.I.A.Though del Rio retired from adult films in 1986, in part due to the AIDS scare prevalent at the time, she returned shortly thereafter, and continued her porn career until 1999. Afterwards, she remains somewhat active in the adult entertainment industry through her Web site and by making special appearances at award shows and conventions. During and after her porn career, she appeared on many TV shows as herself, including a 1996 episode of NYPD Blue.