ABL

ABL may refer to:

In medicine

• ABL (gene), a proto-oncogene associated with chronic myelogenous leukemia
• Abetalipoproteinemia, a rare genetic disorder

In software

• OpenEdge Advanced Business Language, a business application development language created and maintained by Progress Software Corporation

In sports

• African Basketball League
• Alaska Baseball League
• American Basketball League, a name that has been used by three defunct basketball leagues in the United States:
  • American Basketball League (1925–55), an early professional basketball league
  • American Basketball League (1961–63), a league that only played a single full season
  • American Basketball League (1996–98), a women's basketball league
  • American Basketball League (2013), a semi-professional men's basketball league
• ASEAN Basketball League, a professional basketball league for ASEAN nations
• Australian Baseball League:
  • Australian Baseball League (1989–99) (defunct)
  • Australian Baseball League
• AL-Bank Ligaen, a former name for Denmark's top men's ice hockey league

Other uses

• Activity-based learning, a range of pedagogical approaches to teaching based on doing some hands on experiment and activities
• Ablative case
• A Beautiful Lie, 30 Seconds to Mars's second studio album
• A Bug's Life, a 1998 film
  • A Bug's Life (video game), the video game based on the film
• A Block diagram Language, a hardware description language
• Advanced Business Language, the new name for Progress 4GL
• Airborne Laser, a weapons system designed for use by the United States military
• Alameda Belt Line railroad
• Allegany Ballistics Laboratory
• Asset-based lending
• Air Busan of South Korea (ICAO airline code)
• Ambler Airport in Alaska (IATA airport code)
• Armored Box Launcher, a launch container for the BGM-109 Tomahawk cruise missile
• Atmospheric boundary layer, the region where the atmosphere interacts with the surface of the earth
• Australian bat lyssavirus, a rabies like virus found in Australian bats
• Lampung Nyo language, an Austronesian language of Indonesia, by ISO 639-3 language code
• NSW Business Chamber, formerly Australian Business Limited, a business organisation
• Academia Brasileira de Letras (Brazilian Academy of Letters)