Achiroë /əˈkɪroʊiː/, Anchirrhoë (Ancient Greek: Ἀχιρ(ρ)όη), or Anchinoë (Ἀγχινόη), which is perhaps a mistake for Anchiroë, was in Greek mythology a naiad, a daughter of the river-god Nilus. She was also the wife of Belus, by whom she became the mother of Aegyptus and Danaus, and, according to some accounts, Cepheus, and Phineus. Otherwise, the possible mother of this children and spouse of Belus was called Side, eponym of Sidon in Phoenicia.