Therma or Thermē (Ancient Greek: Θέρμα, Θέρμη) was a Greek city founded by Eretrians or Corinthians in late 7th century BC in ancient Mygdonia (which was later incorporated into Macedon), situated at the northeastern extremity of a great gulf of the Aegean Sea, the Thermaic Gulf. The city was built amidst mosquito-infested swampland, and its name derives from the Greek thérmē/thérma, "(malarial) fever". Therma was later renamed Thessalonica by Cassander. By that time the port of the previous capital of Macedonia, Pella, had begun silting up, so Cassander took advantage of the deep-water port to the northwest of Therma to expand the settlement.
- Herodotus, the Seventh, Eighth, & Ninth Books, with Introduction  Reginald Walter Macan
- The Letters to the Thessalonians  by Gene L. Green
- From Mycenae to Constantinople: The Evolution of the Ancient City  By Richard Allan Tomlinson
- Hidryma Meletōn Chersonēsou tou Haimou (Thessalonikē, Greece)