The literal meaning of the Greek word (koinḗ) is "common". It may refer to:
- Koine Greek, the "common" dialect of Greek used in Hellenistic and Roman antiquity
- Koiné language, a supra-regional form of any language
- Standard Modern Greek, sometimes called "modern Koiné"
- The Yoruba language, also called Standard Yoruba
;See also
- Koinon