Termera (Ancient Greek: Τέρμερα), also known as Termerum or Termeron (Τερμερον), was a maritime town of ancient Caria on the south coast of the peninsula of Halicarnassus, near Cape Termerium. Stephanus of Byzantium erroneously assigns the town to Lycia. It was a polis (city-state) and a member of the Delian League. Under the Romans this Dorian town was a free city. According to the Suda the place gave rise to the proverbial expression Τερμέρια κακά, it being used as a prison by the rulers of Caria. In Greek mythology, it was founded by Termerus, after whom it was named.
- Herodotus. Histories. Vol. 5.37.
- Strabo. Geographica. Vol. xiv. p.657. Page numbers refer to those of Isaac Casaubon's edition.
- Pliny. Naturalis Historia. Vol. 5.29.
- Stephanus of Byzantium. Ethnica. Vol. s.v. τὰ Τέρμερα.
- Mogens Herman Hansen & Thomas Heine Nielsen (2004). "Karia". An inventory of archaic and classical poleis. New York: Oxford University Press. pp. 1134-1135. ISBN 0-19-814099-1.
- Suda, s.v.
- Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 61, and directory notes accompanying.
- Lund University. Digital Atlas of the Roman Empire.