| AIF | Apoptosis Inhibitor Factor | In English | → Biochemistry, biophysics → Oncology |
| AIF | Action d'Insertion et de Formation | In French | → Education |
| AiF | Arbeitsgemeinschaft industrieller Forschungsvereinigungen | In German | → Research policy → Associations |
| AIF | Auto Increment Field | In English | → Data |
| AIF | Association des Industries Ferroviaires | In French | → Associations → Rail transport engineering |
| AIF | Association des Industriels de France | In French | → Associations → Industry, industrial policy |
| AIF | Agence Internationale de la Francophonie | In French | → Organizations and associations → International relations → Language, linguistics, literature |
| AIF | Annales de l'Institut Fourier | In French | → Serial publications, periodicals → Mathematics |
| AIF | Asociación Internacional de Fomento (www.worldbank.org/ida/) = IDA | International Development Association | In English = AID | Association Internationale de Développement | In French = AID | Associação Internacional de Desenvolvimento | In Portuguese = МАР | Международная ассоциация развития | In Russian = MAP | Міжнародна асоціація розвитку | In Serbian |
In Spanish | → Associations → Development |
| AIF | Associazione Festival Italiani (www.italiafestival.it) | In Italian | → Associations |
| AIF | American India Foundation (www.aifoundation.org) | In English | → Foundations → International relations |
| AIF | Animal Industry Foundation | In English | → Foundations → Agricultural sciences |