- Hygiea, Hygeia, Hygēa, Hygīa
- (Greek mythology) The personification/goddess of hygiene, good health, cleanliness, and sanitation, and a daughter of Asclepius and Epione. Her Roman counterpart is Salus.
- (astronomy) Short for 10 Hygiea, the fourth-largest known asteroid.
Greek goddess of health, hygiene, cleanliness, and sanitation