Pac or PAC may refer to:
Aviation IATA code PAC Albrook "Marcos A. Gelabert" International Airport in Panama City, Panama Pacific Aerospace Corporation, New Zealand, manufacturer of aircraft: PAC 750XL PAC Cresco PAC CT/4 PAC Fletcher Pakistan Aeronautical Complex, aerospace manufacturer Polar Air Cargo airline, Purchase, New York, US
Commerce Panasonic Avionics Corporation, produces equipment and services for in-flight entertainment, etc. Peruvian Amazon Company, a former rubber company Planned Amortization Class, a type of collateralized mortgage obligation Programa de Aceleração do Crescimento, an investment plan in Brazil
Education Panasonic Academic Challenge, a US national competition Prince Alfred College, Australia Peres Academic Center, a private college in Israel
Military Civil Defense Patrols (Patrullas de Autodefensa Civil), Guatemalan militia and paramilitary group Patriot Advanced Capability, of the MIM-104 Patriot missile Rapid Deployment Force (Malaysia), an armed forces unit
People Pac (wrestler) (1986–2026), English professional wrestler Pac (family), of the Grand Duchy of Lithuania Tupac Shakur or Pac, 2Pac (1971–1996), American rapper
Politics Anti-Corruption Party (Partido Anti-Corrupción), Honduras Armed Proletarians for Communism (Proletari Armati per il Comunismo), a former Italian group Pan Africanist Congress, South Africa Partido Acción Ciudadana (disambiguation), several political parties in Latin America Peoples' Aman Committee, a criminal gang and welfare group associated with the Pakistan Peoples Party Political action committee, U.S. political fundraiser Political Affairs Committee (British Guiana) Polish American Congress Public Accounts Committee: Public Accounts Committee (India) Public Accounts Committee (Ireland) Public Accounts Committee (Malaysia) Public Accounts Committee (United Kingdom) Public Affairs Committee (Malawi)
Science and technology Biology and medicine Pancreatic adenocarcinoma, a form of pancreatic cancer Physician assistant, certified, commonly abbreviated in the US as PA-C Plasma aldosterone concentration Post-abortion care Pre-anesthesia checkup Premature atrial contraction, a cardiac dysrhythmia Photoactivated adenylyl cyclase, a light-sensitive protein Proanthocyanidin, a type of flavanol Pulmonary artery catheterization
Computing and industrial Pacifica Coin; see List of TCP and UDP port numbers#Registered_ports Perceptual Audio Coder, a lossy audio compression algorithm Pin Array Cartridge, an integrated circuit packaging type Pointer Authentication Code, an ARM security feature Probably approximately correct, in machine learning Presentation–abstraction–control, in software architecture Programmable Automation Controller; see Computer appliance Proxy auto-config, a web browser technology
Other science and technology Perturbed angular correlation Polyaluminium chloride, less effective than aluminium chlorohydrate for water treatment Porting Authorisation Code, to transfer mobile phone numbers Pseudo algebraically closed field (PAC field), in mathematics Powdered activated carbon, used in electrochemical regeneration Pure and Applied Chemistry, the official monthly journal of IUPAC
Sports Pennsylvania Athletic Conference, former name of the Colonial States Athletic Conference, an NCAA Division III collegiate athletic conference in Pennsylvania, US Pioneer Athletic Conference, a high school athletic conference in Pennsylvania, US Pocket Athletic Conference, a high school athletic conference in Indiana, US Presidents' Athletic Conference, an NCAA Division III collegiate athletic conference in the Appalachian region of the US
Other uses Pac, Albania, a village in Bytyç, Albania Padiglione d'Arte Contemporanea, a museum in Milan, Italy Pan Asian Coalition, faction in the computer game Battlefield 2142 Parent-Adult-Child, a model in transactional analysis Perfect authentic cadence, in music Performing arts center Providence Anime Conference, 2008 Public assistance committee, a body in the UK for assisting the poor between 1930 and 1940
See also Pac-12 Conference (Pac-12), a US college athletic conference Pac-Man (disambiguation) Public Affairs Council (disambiguation)