English abbreviations from intsum to ioca
- INTSUM (Intelligence Summary)
- INU (Nauru International Airport)
- INV (Inverness Airport)
- INVES (Investigative Program Report)
- INVOL (Involuntary)
- INVS (Institut National de Veille Sanitaire)
- INW (Winslow-Lindbergh Regional Airport)
- INX (Inanwatan Airport)
- INY (Inyati Airport)
- INZ (In Salah Airport)
- IO (Information Operations)
- IOA (Ioannina National Airport)
- IOBC (Infantry Officer Basic Course)
- IOC (initial operational capability)
- IOCA (International Organization of Culture and Arts)