Annia may refer to: * Annia gens, an ancient Roman clan * Any Roman woman of the gens (Annia gens, see for list), including: **Paculla Annia, a priestess involved in the suppression of the Bacchanalia in 186 BC * Via Annia, a Roman road in Cisalpine Gaul named for a member of the ''gens Annia'' * Annia (insect), a disused synonym for a genus of praying mantises

See also