| AFO | Agency Field Office (skr.) |
|---|---|
| AOB | Athletic Office Building (skr.) |
| BO | Box Office (skr.) |
| EO | ex offo (skr.) |
| ERO | European Radiocommunications Office, Európsky rádiokomunikačný úrad (skr.) |
| GAO | General Account Office (skr.) |
| GPO | General Post Office (skr.) |
| HPO | Head Post Office (skr.) |
| ILO | International Labour Office (skr.) |
| IRO | Investor Relations Officer (skr.) |