OAS

• 2'-5'-oligoadenylate synthase
• O-Acetylserine
• OAS1
• OAS2
• OAS3
• Oas, Albay
• Oasis LRT station
• Oaş (disambiguation)
• Ohio Auction School
• Old Age Security
• Ontario Archaeological Society
• Open aortic surgery
• Open-Architecture-System
• OpenAPI Specification
• Option-adjusted spread
• Oracle Application Server
• Oral allergy syndrome
• Organisation Armée Secrète
• Organization of American States
• Oxford Art Society
• United States Department of the Interior