Hiera is a genus of moths.
Hiera may also refer to:
- Hiera (mythology), a mythological figure
- 7119 Hiera, an asteroid
- Hiera (Argolis), an island of Argolis, Greece
- Hiera (Crete), a town of ancient Crete, Greece
- Hiera (Lesbos), a town of ancient Lesbos, Greece
- Hiera (Thera), a Greek island in the Aegean Sea
- Marettimo, the ancient Hiera Nesos, one of the Aegadian Islands off Sicily