| Abbreviation | Definition |
|---|---|
| ILGN | Inscriptions latines de Gaule narbonnaise |
| INAT | Instituto Nacional de Adecuación de Tierras (in Spanish) National Institute for Land Adaptation |
| INPEFECST | In Nomine Patri et Filio, et Cum Spiritu Tuo |
| INRI | Iesus Nazarenus Rex Iudaedorum |
| INSULATOR | Insulating |
| IPA | In Paradiso Absolvo |
| IQG | Instituto Qualisa de Gestão (in Portuguese) Qualisa Institute of Management |
| ISQ | In Status Quo |
| JLAG | Journal of Latin American Geography |
| KLG | Kaos Latin Gamers |
| LA | Latin Aspects |
| LAACC | Latin American Alliance of Christian Churches |
| LAAP | Latin American Art Pavilion |
| LAB | Latin Actors Base |
| LABN | Latin American Biological Network |
| LABU | Latin America Business Unit |
| LACA | Latin American Community Association |
| LACA | Latin American Contemporary Art |
| LACB | Latin American Corporate Banking |
| LACC | Latin America Child Care |