| Abbreviation | Definition |
|---|---|
| IAF | Italian Air Force |
| IAG | Italian angels for growth |
| IAIC | Italian Academy of the Internet Code |
| IAME | Italian American Motor Engineering |
| IAO | Italian Academy of |
| IAPA | Italian American Police Association |
| IASA | Italian American Studies Association |
| IAWV | Italian American War Veterans |
| IBAI | Italian Business Association in Indonesia |
| IBAI | Italian Business Association Indonesia |
| IBDO | Italian Barometer Diabetes Observatory |
| IBRA | Italian Bamboo Rodmakers Association |
| ICCO | Italian Chamber of Commerce of Ontario |
| ICCT | Italian Club of Cape Town |
| ICEPS | Istituto per la Cooperazione Economica Internazionale e i Problemi dello Sviluppo |
| ICLO | Italian Culture and Language Organization |
| ICOA | Informatica, Consulenza, Organizzazione Aziendale |
| IDBN | Italian Digital Biomanufacturing Network |
| IDEI | Interventi Didattici Educativi Individuali |
| IDMO | Italian Digital Media Observatory |