AOS, Aos or AoS may refer to:
The Aosta Valley (Italian: Valle d'Aosta [ˈvalle daˈɔsta] (official) or Val d'Aosta (usual); French: Vallée d'Aoste [vale daɔst]/[vale dɔst] (official) or Val d'Aoste (usual); Arpitan: Val d'Outa) is a mountainous semi-autonomous region in northwestern Italy.
The aos sí ([eːs ˈʃiː], older form aes sídhe [eːs ˈʃiːðʲə]) is the Irish term for a supernatural race in Irish mythology and Scottish mythology (usually spelled Sìth, however pronounced the same), comparable to the fairies or elves.
Aosdána (/iːsˈdɑːnə/; from aos dána "people of the arts") is an Irish association of artists. It was created in 1981 on the initiative of a group of writers with support from the Arts Council of Ireland.
Aosta ([aˈɔsta]; French: Aoste - [ɔst] Arpitan: Aoûta; Latin: Augústa Prætṓrĭa Salassṓrum) is the principal city of Aosta Valley, a bilingual region in the Italian Alps, 110 km (68 mi) north-northwest of Turin.
Aoste is a French commune in the Isère department in the Auvergne-Rhône-Alpes region of southeastern France.
Aosta Valley (Vallée d'Aoste, VdA) is a regionalist coalition of parties active in Aosta Valley, Italy.
Aoshima Bunka Kyozai Co., Ltd. (株式会社 青島文化教材社, Kabushiki Gaisha Aoshima Bunka Kyōzaisha), commonly truncated to Aoshima, is a Japanese model manufacturer based in Shizuoka Prefecture.
Aostan French (French: français valdôtain) is the variety of French spoken in the Aosta Valley, Italy.
In computing, AoS and SoA refer to contrasting ways to arrange a sequence of records in memory, with regards to interleaving, and are of interest in SIMD programming.