APL is an abbreviation, acronym, or initialism that may refer to: Science and technology 132524 APL, an asteroid Abductor pollicis longus muscle, in the human hand Acute promyelocytic leukemia, a subtype of acute myelogenous leukemia Applied Physics Letters, a physics journal Nampula Airport (IATA airport code: APL), in Mozambique Computers .apl, the file extension of the Monkey's Audio metadata file AMD Performance Library, renamed Framewave, a computer compiler library APL (programming language), an array-based programming language APL (codepage), the character set for programming in APL Address Prefix List, a DNS record type Address programming language, an early high-level programming language developed in the Soviet Union Advanced Physical Layer, an extension of Ethernet 10BASE-T1L for field devices Alexa Presentation Language, a language for developing Amazon Alexa skills Software licences Adaptive Public License, an Open Source license from the University of Victoria, Canada AROS Public License, a license of AROS Research Operating System Arphic Public License, a free font license Organizations APL (shipping company), a Singapore-based container and shipping company Aden Protectorate Levies, a militia force for local defense of the Aden Protectorate Advanced Production and Loading, a Norwegian marine engineering company formed in 1993 Afghanistan Premier League, an Afghan Twenty20 cricket league Afghan Premier League, a men's football league in Afghanistan American Party of Labor, a Marxist-Leninist anti-revisionist party in the US American Patriot League, a proposed American football spring league American Premiere League, a Twenty20 cricket league in the US American President Lines, a container transportation and shipping company American Protective League, a World War I-era pro-war organization Applied Physics Laboratory, at Johns Hopkins University Association of Pension Lawyers, UK Aurora Public Library (disambiguation) Australian Professional Leagues, an Australian soccer governing body Irish Anti-Partition League, a Northern Ireland political organisation Other uses apl.de.ap (born 1974), pseudonym of Allan Pineda Lindo, Filipino-American musician Auxiliary Personal Living, a US Navy hull classification for barracks craft; see