Demetrias (disambiguation)

Demetrias (Ancient Greek: Δημητριάς) was an ancient Greek city. Demetrias may also refer to:


 * Battle of Demetrias, a 1270s sea battle near the Greek city
 * Demetriapolis or Demetrias, an ancient city in Arachosia
 * An alternative name for the city of Sicyon in the northern Peloponnesus
 * Demetrias in Assyria, an ancient Greek colony in northern Iraq
 * Demetrias (beetle), a genus of ground beetle
 * Demetrias (daughter of Anicius Hermogenianus Olybrius), Roman noblewoman of the 5th century