ABW, or abw, may refer to:
Arts and media
- ABW, a 2001 album by Addis Black Widow
- ABW (TV station), the Australian Broadcasting Corporation's Perth TV station
Aviation
- AirBridgeCargo, a Russian cargo airline
- IATA airport code for Abau Airport in Central Province, Papua New Guinea
Technology
- Abandonware, software no longer supported by its owner
- AbiWord, word processor
- Advanced Brake Warning, in vehicle safety systems <!-- appears more than once because it comes under more than one heading -->
Transportation
- ABW, National Rail code for Abbey Wood railway station in London, UK
- Advanced Brake Warning, in vehicle safety systems <!-- appears more than once because it comes under more than one heading -->
Other
- ABW, the ISO 3166-1 alpha-3 country code for Aruba
- abw, the ISO 639-3 code the Pal language, a Papuan language of Papua New Guinea
- Activity Based Working, workplace strategy that provides people with a choice of settings for their work activities
- Agencja Bezpieczeństwa Wewnętrznego, the Polish internal security agency, also known as ISA
- Alcohol by weight, used by some brewers instead of Alcohol by volume (ABV)
- Australian Bird Watcher, an ornithological journal