OAA

OAA may refer to:

• Oceania Athletic Association
• Office of the Administrative Assistant to the Secretary of the Army
• Ohio Auctioneers Association
• The Older Americans Act of 1965
• Oman Automobile Association, a member of the FIA
• Ontario Association of Architects
• Open Agent Architecture
• Optically active additive, for use in paints and coatings
• Optometrists Association Australia
• Oriental Astronomical Association
• Orlando Apopka Airport
• Oxaloacetic acid
• Oxford Aviation Academy
• Oxley Aviation, Australia (ICAO operator designator)
• Ozark Adventist Academy

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