| Acronym | Sense | Language | Topics |
|---|---|---|---|
| INA | Internacia Naturkuraca Asocio | In Esperanto | → Associations |
| INA | Integrated Network Analyzer | In English | → Networks, communication |
| INA | International Nanoplankton Association | In English | → Associations → Marine research, oceanography → Palaeontology → Zoology |
| INA | Istituto Nuova Africa | In Italian | → Organizations and associations |