| Acronym | Definition |
|---|
| ABOS➣American Board of Orthopaedic Surgery |
| ABOS➣Association of Bookmobile and Outreach Services |
| ABOS➣Associazione Bambini Ospedalizzati Sardegna (Italian: Association of Hospitalized Children in Sardinia; est. 1991; Cagliari, Italy) |
| ABOS➣Anorectic Behavior Observation Scale |
| ABOS➣Algemeen Bestuur van de Ontwikkelingssamenwerking (Dutch: General Administration for Development; Belgium) |
| ABOS➣Astwood Bank Operatic Society (UK) |