Annia

Annia may refer to:


 * Annia gens, an ancient Roman clan
 * Any Roman woman of the 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