Demetria may refer to:
Alternative form of Demeter (Δημήτηρ), Greek goddess of harvest Demetria (bacteria), a genus of bacteria from the family Dermacoccaceae Demetria (name), a feminine given name (and list of people with that name) Demetria, a fictional planet in the CrossGen comics Sigilverse
See also Demetrias (disambiguation) Demetrius (disambiguation) Demeter (disambiguation)