AOP

• Aama Odisha Party, political party, India
• Association of Optometrists, a British trade association
• American Opera Projects
• Assembly of the Poor, an NGO network in Thailand
• Association of Photographers, a British trade association
• Australian Orangutan Project
• Army of the Potomac, the major Union Army in the Eastern Theater of the American Civil War.

• An abbreviation of prebediolone acetate (21-acetoxypregnenolone)
• Advanced oxidation process
• Adverse outcome pathway, to adverse effects in biology
• All one polynomial
• Annals of Probability, a mathematics journal
• Apnea of prematurity
• Argument of periapsis, an orbital element of an object in a star's orbit (for sun orbit, 'Argument of perihelion')
• AOP (IRC), AutoOp, an Internet Relay chat access level

• Agent-oriented programming
• Aspect-oriented programming
• Attribute-oriented programming

• Appellation d'origine protégée (protected designation of origin), a quality label of the European Union
• Appellation d'origine protégée, a food certification of Switzerland

• aop, advance online publication
• AŌP, a Japanese idol group
• Age of Persuasion, a Canadian radio programme
• Authors of Pain, a professional wrestling tag team
• Air observation post, artillery spotter aircraft
• Apocalypse of Peter, a New Testament apocryphal text.
• Annual operations plan, part of sales and operations planning

• AOPS (disambiguation)

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