| Subject | English | Thesaurus |
| abbr., mil., WMD | Deputy Director Acquisition Policy and Program Integration for Acquisition Systems Management, Office of the Under Secretary of Defense for Acquisition | Dep Dir, ASM |
| abbr., mil., WMD | Director of Acquisition Program Integration, Office of the Under Secretary of Defense for Acquisition | Dir, API |
| USA | Office of Polar Programs at the National Science Foundation | OPP |
| mil., abbr. | Office of the Chief of Support Services | OCSS |
| mil., abbr. | Office of the Director of Aerospace Programs | ODAP |
| abbr., int. law. | Office of the Directorate General of Programmes | ODGP (Ker-online) |
| abbr. | Office Of The Insurance Ombudsman | OIO |
| USA | Office of the Iraq Program Oil for Food | OIP |
| abbr., mil., WMD | Office of the Program Manager for Chemical Munitions | OPMCM |
| mil., abbr. | Office of the Secretary of Defense, Office of Director of Defense Program Analysis and Evaluation | OSD |
| abbr., scottish | UN Office for the Co-ordination of Humanitarian assistance to Afghanistan | UNOCHA |
