Antonietta may refer to:
Antonietta (given name), a female given name Antonietta (gastropod), a genus belonging to the taxonomic family Glaucidae of colorful sea slugs Antonietta (novel), a 1991 novel by John Hersey Antonietta, Venezuelan singer
See also Antonieta, a 1982 Spanish film Antonia (disambiguation) Antonina (disambiguation)