The gens Alfia was a Roman family, known from the first century BC to the first century AD. The gens is known primarily from three individuals, including a statesman, a rhetorician, and a Latin poet. The cognomina of this family are Flavus, which means "golden" or "yellow", and Avitus, derived from avus, "grandfather". Flavus appears to have been hereditary in the family, while Avitus seems always to have been a personal cognomen.
Alfia may refer to:
- Alfia (gens), a Roman gens
- Alfia Nazmutdinova (born 1949), Soviet gymnast
- Kfir Alfia, American activist