AOP may refer to:

Organisations 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.

Science, mathematics and technology 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

Computer programming Agent-oriented programming Aspect-oriented programming Attribute-oriented programming

Food , the French term for protected designation of origin, a quality label of the European Union (Switzerland), a food certification of Switzerland

Other 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

See also AOPS (disambiguation)