Other
- Poverty threshold, the section of people who can fulfil their minimum basic needs
- Aden Protectorate Levies, a militia force for local defense of the Aden Protectorate
- apl.de.ap, pseudonym of Allan Pineda Lindo, a member of hip hop group The Black Eyed Peas
- APL, United States Navy hull classification symbol for barracks craft
- Nampula Airport, Mozambique, from its IATA airport code
- APL is the name of an asteroid: 132524 APL
- Average Party Level, a term used in Role Playing Games such as Dungeons & Dragons
- Accreditation of Prior Learning (UK) refers to a reduction in the amount of study required to pass a degree, due to previous experience or study.
- All-Purpose Linotype, a fully manual linecasting machine similar to the Ludlow Typograph, built to compete with the Ludlow on point sizes too large for a conventional Linotype.
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