| Worldwide |
IOA |
International Ombudsman Association |
Associations & Organizations // Professional Associations |
| Worldwide |
IOA |
International Olympic Academy |
Associations & Organizations // Sports & Recreation Organizations |
| Worldwide |
IOA |
Input-Output Analysis |
Academic & Science // Social Science |
| Worldwide |
IOA |
Information Object Address |
Technology // Robotics & Automation |
| Worldwide |
IoA |
Indicators of Attack |
Computing // Security |
| Worldwide |
IOA |
International Oversight Advisory |
Miscellaneous // Fictional |
| United States |
IOA |
Islands of Adventure |
Regional // Buildings & Landmarks |
| United Kingdom |
IoA |
Institute of Astronomy |
Academic & Science // Universities & Institutions |
| United Kingdom |
IOA |
Institute of Acoustics |
Associations & Organizations // Professional Associations |
| Ireland |
IOA |
Irish Orienteering Association |
Associations & Organizations // Sports & Recreation Organizations |
| India |
IOA |
Indian Olympic Association |
Associations & Organizations // Sports & Recreation Organizations |
| India |
IOA |
Indian Olympic Association |
Associations & Organizations // Sports & Recreation Organizations |
| Greece |
IOA |
Ioannina Airport |
Transport & Travel // Airport Codes |
| China |
IOA |
Institute of Acoustics |
Academic & Science // Research & Development |