Nomen may refer to:
- Nomen (Roman name), the middle part of Ancient Roman names
- Nomen est omen, a Latin quote about nominative determinism
- Nomen (ancient Egypt), the personal name of Ancient Egyptian pharaohs
- Jaume Nomen (born 1960), Catalan astronomer
- Nomen, Latin for noun
- Nomen, part of the FRSAD library model
See also
- Nō-men, the mask used in Noh performances
- Nomina (journal), published by the Society for Name Studies in Britain and Ireland