PL

PL, P.L., Pl, Pl., or .pl may refer to::

Politics, law and philosophy

• Pl., an abbreviation for Plural
• Partido Laborista
• Patrologia Latina
• Partit Laburista, a Maltese political party
• Philippine Legislature, a legislature that existed in the Philippines from 1907 to 1935
• PL Kyodan, a religious movement founded in Japan in the early 20th Century
• Poland, ISO 3166-1 country code
• Polish language, ISO 639-1 code
• Private label, an arrangement between companies regarding the exclusive sale of goods
• Progressive Labor Party, a United States communist party
• Propositional logic, a system of evaluating truth-based propositions in terms of binary logic
• Public library
• Public law
• Public liability
• PL postcode area, a group of postcode districts in England

Science, aviation and military

• PL tone, a kind of squelching of an audio signal
• Pluto, a dwarf planet discovered by Percival Lowell
• Patriotic League (Bosnian: Patriotska Liga), a first military organisation of Republic of Bosnia and Herzegovina
• Photoluminescence, the re-emission of photons from a surface following exposure
• Piecewise linear
• Pierre Levasseur, a French aircraft designer
• Platoon Leader in the United States Army
• Plastic limit in geotechnical engineering
• Path loss in telecommunication engineering
• Pulchellidin (Pl), an anthocyanidin
• Airstars Airways, IATA airline designators (PL)
• AeroPeru, IATA airline designators (PL)
• Ice pellets, METAR Code PL
• Digital Private Line, another form of tone squelching
• Two variants of litre, picolitre (pL) and petaliter (PL)

Computing and internet

• .pl, country code top-level domain for Poland
• .pl, common filename suffix for Perl scripts
• .pl, common filename suffix for Prolog programs
• .pl, common filename suffix for TeX font property lists
• PL/C, a computer programming language developed in the 1970s
• PL/I, a computer programming language developed in the 1960s
• PL/SQL, Oracle's procedural language extension
• Packet loss, one of the three main error types encountered in digital communications
• Procedural programming, a programming paradigm
• Programming language
• Presentation Layer, one of the seven layers in the OSI model of computer networking

Sports

• Pioneer Baseball League, a Rookie league in Minor League Baseball
• Pioneer Football League, NCAA FCS conference
• Premier League, the top English football league
• Pacific League, one of the two leagues in Japan's Nippon Professional Baseball

Other

• Papillion-La Vista Senior High School in Papillion, Nebraska, USA
• Pluck technique in Handbell music