Constantia may refer to:
Places and jurisdictions
Europe Constanța or Constantia (in Scythia) (Κωνστάντια), Ancient Tomis, capital of (the Romanian part of) Dobruja region by the Black Sea the former Diocese of Constantia in Scythia, now a Latin Catholic titular see Salamis, Cyprus, renamed Constantia in the 4th century, also Salamina (Italian), former seat of a Metropolitan archbishopric, now double (Latin Catholic and Cypriot Orthodox) titular see Coutances, France Konstanz, Germany
Asia Constantia, Lucknow, in Lucknow, India, built as the residence of Claude Martin Constantia (Osrhoene), a Roman/Byzantine city in northern Mesopotamia now in Asian Turkey
Elsewhere Constantia (town), New York, United States Constantia (CDP), New York, a subdivision of Constantia, New York Constantia, Cape Town, South Africa
Biology Constantia (plant), an orchid genus Constantia (gastropod) a genus of sea snails in the family Vanikoridae
Other Constantia (wife of Gratian), wife of Roman emperor Gratian Leona Constantia, 17th-century alchemist Constantia (wine), a South African wine Constantia (typeface), a typeface introduced as part of Windows Vista Chevrolet Constantia, an automobile marketed in South Africa from 1969 to 1978 , one of several ships of that name