ABL may refer to:

Aviation

Airborne Laser An airborne laser (ABL) is a laser system operated from a flying platform, as in the: * Soviet/Russian Beriev A-60 (1981, active) * American Boeing YAL-1 (2002-2012, scrapped) * An American modified NKC-135A unit (1975-1984, in storage.) Deve ...

, a weapons system designed for use by the United States military *

Air Busan Air Busan Co., Ltd., operating as Air Busan () is a low-cost airline based in Busanjin-gu, Busan, South Korea. It is a subsidiary of Asiana Airlines. The airline began its operation in 2007 as Busan International Airlines Company (); it launched ...

of South Korea (ICAO airline code) * IATA airport code for

Ambler Airport Ambler Airport ( Iñupiaq: ''Ivisaappaat Mirviat'') is a state-owned public-use airport located one nautical mile (1.85 km) north of the central business district of Ambler, a city in the Northwest Arctic Borough of the U.S. state of Alask ...

in State of Alaska, USA

Companies, groups, organizations

ABL Space Systems Long Wall (formerly ABL Space Systems) is an American aerospace company, based in Long Beach, California (originally from El Segundo, California), that manufactures deployable launch vehicles and infrastructure for missile defense, formerly for ...

Alameda Belt Line The Alameda Belt Line was incorporated on January 12, 1925, to take over about of trackage constructed by the city of Alameda, California, on Clement Avenue in 1918. The company acquired the property on February 17, 1926, and was jointly owne ...

railroad *

NSW Business Chamber Business NSW is an Australian not-for-profit membership organisation that advocates on behalf of Australian businesses. The organisation has been operating since 1826. It has formerly been known as the NSW Business Chamber (2006-2020), The Cham ...

, formerly Australian Business Limited, a business organisation *

Academia Brasileira de Letras The Academia Brasileira de Letras (ABL; English: ''Brazilian Academy of Letters'') is a Brazilian literature, literary non-profit society established at the end of the 19th century. The first president, Machado de Assis, declared its foundation ...

(Brazilian Academy of Letters)

Computing

* A Block diagram Language, a hardware description language * Advanced Business Language, the new name for Progress 4GL *

OpenEdge Advanced Business Language OpenEdge Advanced Business Language, or OpenEdge ABL for short, is a business application development language created and maintained by Progress Software Corporation. Typically classified as a fourth-generation programming language, it utilize ...

, a business application development language created and maintained by Progress Software Corporation

Medicine

ABL (gene) Tyrosine-protein kinase ABL1 also known as ABL1 is a protein that, in humans, is encoded by the ''ABL1'' gene (previous symbol ''ABL'') located on chromosome 9. c-Abl is sometimes used to refer to the version of the gene found within the mammalia ...

, a proto-oncogene associated with chronic myelogenous leukemia *

Abetalipoproteinemia Abetalipoproteinemia (also known as: Bassen–Kornzweig syndrome, microsomal triglyceride transfer protein deficiency disease, MTP deficiency, and betalipoprotein deficiency syndrome) is a disorder characterized by abnormal absorption of fat and ...

, a rare genetic disorder * Accidental bowel leakage, also known as

fecal incontinence Fecal incontinence (FI), or in some forms, encopresis, is a lack of control over defecation, leading to involuntary loss of bowel contents—including flatus (gas), liquid stool elements and mucus, or solid feces. FI is a sign or a symptom ...

Entertainment

* ''

A Beautiful Lie ''A Beautiful Lie'' is the second studio album by American rock band Thirty Seconds to Mars, released on August 30, 2005 through Virgin Records. It was produced by Josh Abraham. ''A Beautiful Lie'' differs notably from the band's self-titled ...

'', 30 Seconds to Mars's second studio album * ''

A Bug's Life ''A Bug's Life'' (stylized in all lowercase) is a 1998 American animated comedy film directed by John Lasseter from a screenplay written by Andrew Stanton, Donald McEnery, and Bob Shaw, and a story conceived by Lasseter, Stanton, and Joe Ran ...

'', a 1998 film ** ''A Bug's Life'' (video game), the video game based on the film

Military and weaponry

Allegany Ballistics Laboratory Allegany Ballistics Laboratory (ABL) located in Rocket Center, West Virginia, is a diverse factory, industrial complex employing some 1,000 people across . The facility is a member of the Federal Laboratory Consortium and is operated by Northr ...

Armored Box Launcher The Mark 143 Armored Box Launcher (ABL) is a four-round protected launch container for the BGM-109 Tomahawk Cruise Missile. Fitted to the following their 1980s recommissioning upgrade, each ABL contains four ready-to-fire Tomahawks. The use of ...

, a launch container for the BGM-109 Tomahawk cruise missile

Sports

African Basketball League The Continental Basketball League (CBL), formerly the African Basketball League (ABL), was a men's private professional basketball league in Africa established with the vision of creating opportunities in the sports industry by capturing the rich ...

Alaska Baseball League The Alaska Baseball League (ABL) is an amateur collegiate summer baseball league based entirely in southern Alaska. Players in the league must have attended one year of college and must have one year of NCAA eligibility remaining. In the past, ...

* American Basketball League, a name that has been used by three defunct basketball leagues in the United States: **

American Basketball League (1925–1955) The American Basketball League (ABL) was an early professional basketball league. During six seasons from 1925–26 to 1930–31, the ABL was the first attempt to create a major professional basketball league in the United States. History Jos ...

, an early professional basketball league **

American Basketball League (1961–1962) The American Basketball League played one full season, 1961–1962, and approximately one-third of the next season until the league folded on December 31, 1962. The ABL was the first basketball league to have a three-point field goal for s ...

, a league that only played a single full season **

American Basketball League (1996–1998) The American Basketball League, often abbreviated to the ABL of 1996 was a professional women's basketball league in the United States. At the same time the ABL was being formed, the National Basketball Association (NBA) was creating the Women's ...

, a women's basketball league **

American Basketball League (2013–2015) The American Basketball League (ABL) was a semi-professional men's basketball league that began play in January 2013. It is the fourth league to use the ABL name. Steven A. Hanley, former agent of Magic Johnson, was ABL President and CEO. Fo ...

, a semi-professional men's basketball league * ASEAN Basketball League, a professional basketball league for ASEAN nations * Australian Baseball League: **

Australian Baseball League (1989–1999) The Australian Baseball League (ABL) was a baseball league, established in 1987 and disbanded in 1999. Formation Before the formation of the Australian Baseball League, the Claxton Shield, established in , was Australia's premier baseball to ...

(defunct) **

Australian Baseball League The Australian Baseball League (ABL) is a professional baseball league in Australia. The league is governed by the Australian Baseball Federation (ABF). It uses the same name as a now-defunct competition held during the 1990s, and though it s ...

AL-Bank Ligaen The Superisligaen, known as the Metal Ligaen for sponsorship reasons, is the highest-level ice hockey league in Denmark. The league consists of 9 professional teams. Teams from the Superisligaen can participate in the International Ice Hockey F ...

, a former name for Denmark's top men's ice hockey league

Other uses

Activity-based learning Activity-based learning, or ABL, describes a range of pedagogical approaches to teaching. Its core premises include the requirement that learning should be based on doing hands-on experiments and activities. Activity-based learning is rooted in t ...

, a range of pedagogical approaches to teaching based on doing some hands-on experiment and activities * , glossing abbreviation for

ablative case In grammar, the ablative case (pronounced ; list of glossing abbreviations, abbreviated ) is a grammatical case for nouns, pronouns, and adjectives in the grammars of various languages. It is used to indicate motion away from something, make ...

Asset-based lending Asset-based lending is any kind of lending secured by an asset. This means, if the loan is not repaid, the asset is taken. In this sense, a mortgage is an example of an asset-based loan. More commonly however, the phrase is used to describe lending ...

Atmospheric boundary layer In meteorology, the planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL) or peplosphere, is the lowest part of the atmosphere and its behaviour is directly influenced by its contact with a planetary surface. On Ea ...

, the region where the atmosphere interacts with the surface of the earth *

Australian bat lyssavirus Australian bat lyssavirus (ABLV) is a enzootic virus closely related to the rabies virus. It was first identified in a 5-month-old juvenile black flying fox (''Pteropus alecto'') collected near Ballina, New South Wales, Ballina in northern New ...

, a rabies-like virus found in Australian bats * Lampung Nyo language, an Austronesian language of Indonesia, by ISO 639-3 language code