| INRA | Inland Northwest Research Alliance 
| Others |
| INRA | Institut National de la Recherche Agronomique
| Others |
| INRA | Institut National de Recherche Agronomique
| Others |
| INRA | Institute for Natural Resources in Africa
| Others |
| INRA | Instituto Nacional de Reforama Garana
| Others |
| INRA | Instituto Nacional de Reforma Agraria
| Others |
| INRA | Intergalactic Naval Reserve Arm
| Others |
| INRA | International Network for Religion and Animals
| Others |
| INRA | International Nuclear Regulators Association
| Others |
| INRA | International Nuclear Regulators' Association
| Others |
| INRA | Irish National Republican Army
| Others |