| ABI | Avionics Bus Interface | In English | → Human-computer interaction → Aeronautics, aircraft |
| ABI | Acquired Brain Injury | In English | → Neurology |
| ABI | Adaptive Brain Interfaces | In English | → Human-computer interaction → Neurology |
| ABI | Application Binary Interface | In English | → Computer science |
| ABI | Associatie van Binnenlandse Industriëlen | In Dutch | → Associations → Industry, industrial policy |
| ABI | Associação Brasileira de Imprensa | In Portuguese | → Associations |
| ABI | Associazione Bancaria Italiana | In Italian | → Associations → Financial markets |