Demeter is usually the Greek grain goddess. It may also refer to:
Astronomy:
- Demeter, name formerly used for Lysithea (moon), satellite of Jupiter, from 1955 to 1975
- 1108 Demeter, asteroid
Literature:
- Demeter (c. 300 BC), an elegy by Philitas of Cos
- "Demeter" (1999), a sonnet by Carol Ann Duffy
Other:
- Demeter (surname)
- Demeter (cat), character from the musical Cats by Andrew Lloyd Webber
- Demeter (satellite) French micro-satellite launched 2004 with a 2-year planned lifetime, for developing earthquake prediction
- Demeter Fragrance Library, fragrance company
- Demeter International, certification organization for biodynamic farming
- Demeter, brand of electric guitar and bass guitar amplifier
- Demeter, terrain bot in Windows game Activeworlds
- Law of Demeter, software development design guideline ("Only talk to your immediate friends").
- USS Demeter (ARB-10), USS battle damage repair ship
- Demeter, the fictional Russian ship which brought Count Dracula to England in Bram Stoker's novel Dracula.
- Demeter, a freighter vessel in Egosoft's X (video game series) video game series