Atossa (550 BC–475 BC) was an Achaemenid empress and daughter of Cyrus the Great and Cassandane.
Atossa or Atoosa may also refer to: Atossa: daughter and wife of Artaxerxes II
Objects 810 Atossa, an asteroid belonging to the Flora family in the Main Belt
Medicines Ondansetron, a medicine used against nausea and vomiting
People Atossa Leoni (born 1978) German-born film, television, and theater actress Atossa Araxia Abrahamian, Swiss-American journalist Atoosa Reaser, American politician
Taxonomy Atossa, a synonym of the genus Vicia, of the legume family (Fabaceae) Atossa, a synonym of the genus Nossa, of the oriental swallowtail moth family (Epicopeiidae) Atossa, a synonym of the genus Grammoechus, longhorn beetles of the subfamily Lamiinae Atossa, a synonym of the genus Declana, of the geometer moth family (Geometridae)