API, or application programming interface, is a connection between computers or programs.
API, api, or Api may also refer to:
Companies and organizations Academic Programs International, an American study-abroad provider Aliansi Perempuan Indonesia, or Indonesian Women's Alliance, a political grouping in Indonesia American Petroleum Institute, an American trade-lobbying and international-standardization organization Animal Protection Institute, an American non-profit organization Anonima Petroli Italiana, an Italian petrol (gasoline) company Associated Producers Incorporated a B-movie subsidiary of 20th Century Fox Athletes' Performance Institute, an American training facility for competitive athletes Australian Pharmaceutical Industries, a health and beauty company owned by Wesfarmers Australian Property Institute, an Australian professional organization in valuation Automated Processes, Inc., an American audio electronics company Automobile Products of India, an Indian automotive company Aviation Partners Inc., an American aviation components company
Education Academic Performance Index, a measure of scholastic performance used in California, United States Auburn University, formerly known as Alabama Polytechnic Institute
Places Api (mountain), Nepal Api Chamber, a large cave chamber in Malaysia Mount Api, Malaysia
Politics Alliance for Italy, a centrist political party in Italy Arab Peace Initiative, a peace initiative proposed in 2002 at the Beirut Summit of the Arab League
Science and technology Active pharmaceutical ingredient, a basic component of any medicine or pharmaceutical drug Advanced primer ignition, a type of blowback operation for firearms that ignites the primer when the bolt is still moving with the goal of increasing rate of fire and decreasing felt recoil Aminopropylindole, a chemical compound Petroleum industry nomenclature deriving from American Petroleum Institute: API gravity, a measure of the density of petroleum API number, a unique identifier applied to each petroleum exploration or production well drilled in the United States Analytical Profile Index, a miniaturized panel of biochemical tests compiled for identification of groups of closely related bacteria API oil-water separator Air Pollution Index, a measure of air quality used in Hong Kong and Malaysia Armor-piercing incendiary, a type of armor-piercing shot and shell Atmospheric pressure ionization, a type of ionization in mass spectrometry
Other uses Advance Passenger Information, a passenger name record collected by commercial transportation operations Asian-Pacific Islander Aviation Preflight Indoctrination, the first major phase of training for a United States Naval Aviator Announcement in the public interest, an alternate name for a public-service announcement International Phonetic Alphabet, a system of phonetic notation (known in French as the alphabet phonétique international) Api (apple), an apple cultivar Apiaká language (ISO 639-3 language code: api)
See also AP1 (disambiguation) API Network, an Australian organisation of public intellectuals, and book publisher