| Acronym | Definition |
|---|
| ABN | Australian Business Number |
| ABN | Advance Beneficiary Notice |
| ABN | Asia Business News |
| ABN | Airborne |
| ABN | Abnormal |
| ABN | Alabama Board of Nursing |
| ABN | Amoda Broadcasting Network (TV; India) |
| ABN | Agencia Bolivariana de Noticias (Spanish: Bolivarian News Agency, Venezuela) |
| ABN | Absecon (Amtrak station code; Absecon, NJ) |
| ABN | Automotive Broadcasting Network |
| ABN | Acronym Builders Network |
| ABN | Algemene Bank Nederland |
| ABN | Association of British Neurologists |
| ABN | Autorité du Bassin du Niger (French: Niger Basin Authority) |
| ABN | AT&T Business Network |
| ABN | Australian Bibliographic Network |
| ABN | Algemeen Beschaafd Nederlands |
| ABN | Alaska Board of Nursing |
| ABN | Albina Airport (airport code; Oregon) |
| ABN | Alcock Brown-Neaves Group (Australia) |
| ABN | Assumed Business Name |
| ABN | Aerodrome Beacon (aviation, NOTAM) |
| ABN | Asia Blogging Network |
| ABN | Agri Broadcast Network (radio news network; Ohio) |
| ABN | Assholes by Nature (band) |
| ABN | Avivamiento Broadcasting Network (religious local TV station; Colombia) |
| ABN | Angled Bed of Nails (connector type) |
| ABN | African Broadcasting Network |
| ABN | Alarm Broadband Network |
| ABN | Africa Business Network |
| ABN | African Biosciences Network (International Biosciences Network) |
| ABN | Asahi Broadcasting Nagano Co., Ltd. (Japan) |
| ABN | American Business Network (Sprint) |
| ABN | Alliance of Boston Neighborhoods (Boston, Massachusetts) |
| ABN | Acid-Base Neutrals |
| ABN | American Board of Neurology |
| ABN | Action Bets Network |
| ABN | Aluminium, Brass & Nickel (engines) |
| ABN | Alliance Business Network (various locations) |