| Acronym | Definition |
|---|
| INA | Indonesia (Indonesia country abbreviation) |
| INA | Institut National de l'Audiovisuel (French: National Broadcasting Institute) |
| INA | Industrija Nafte (Croatian oil industry joint stock company) |
| INA | International Nanny Association |
| INA | Information Network of Arkansas |
| INA | Institute of Nautical Archaeology |
| INA | Indian National Army |
| INA | Institut National Agronomique (French) |
| INA | Instituto Nacional de Administração (Portugese) |
| INA | Instituto Nacional Agrario (Spanish: National Agrarian Institute; Honduras) |
| INA | Immigration and Nationality Act of 1952 |
| INA | Information Not Available |
| INA | Iraqi News Agency |
| INA | Illinois Nurses Association |
| INA | Istituto Nazionale delle Assicurazioni (Italian insurance institute) |
| INA | International Nannoplankton Association (UK) |
| INA | Iowa Nurses' Association |
| INA | Integrated Network Analyzer |
| INA | Intelligent Network Architecture |
| INA | Interactive Network Adapter (Cisco) |
| INA | Integrated Network Architecture (JetroPlatforms Ltd.) |
| INA | Information Network Architecture (Bellcore) |
| INA | Internal Network Adapter |
| INA | Institut National de La Communication Audiovisuelle (French: National Institute of Audiovisual Communication) |
| INA | Individual Number Allocation |
| INA | Internal Network Address (Sprint) |
| INA | Infogrames North America |
| INA | International Needs Australia (Mitcham, VIC, Australia) |
| INA | Ice-Nucleating Agent |
| INA | International Neurological Association |
| INA | Integrated Notification Application |
| INA | Illinois Numismatic Association |
| INA | Industrie Nadellager |
| INA | Invasive Nosocomial Aspergillosis |
| INA | Indian National Airways |
| INA | Independent America Party |
| INA | Institute for Non-Clinical Approach (Japan) |
| INA | Interoperability Network Activity |
| INA | Information Needs Assessment (various organizations) |