| Abbreviation | Definition |
|---|---|
| AISF | Italian Academy of Forest Sciences |
| AISH | Association Internationale des Sciences Hydrologiques |
| AISH | International Association of Hydrological Sciences |
| AISHE | All Ireland Society for Higher Education |
| AISI | African Information Society Initiative |
| AISP | Association Internationale de Science Politique |
| AISP | International Political Science Association |
| AISPIT | Association Internationale de Séismologie et de Physique de l'Intérieur de la Terre |
| AISPIT | Association Internationale de Sismologie et de Physique de l'Intrieur de la Terre |
| AISPIT | International Association of Seismology and Physics of the Earth's Interior |
| AIST | Association for Iron & Steel Technology |
| AIST | Association for Iron and Steel Technology |
| AITES | Asssociation Internationale des Travaux en Souterrain |
| AITES | International Tunnelling Association |
| AIU | Asociacin de Ingenieros del Uruguay |
| AIU | Asociación de Ingenieros del Uruguay |
| AIU | Association internationale des Universités |
| AIU | Association internationale des Universits |
| AIU | Association of Engineers of Uruguay |
| AIU | International Association of Universities |