| 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 |
| ecol., abbr. | Environmental Protection Agency - Office of Water Programs | EPA-OWP |
| transp., abbr. | Office of Aircraft Services | OAS |
| univer., abbr. | Office Of Arts And Sciences Information Services | OASIS |
| ocean., abbr. | Office of Charting and Geodetic Services | C&GS |
| NGO, abbr. | Office of Children's Ombudsman | OCO |
| USA | Office of Community Oriented Policing Services | COPS |
| USA | Office of Community Services | OCS |
| abbr., scottish | Office of Defense Co-ordination | ODC (USA) |
| energ.ind., abbr. | Office of Defense Programs | DP |
| abbr., mil. | Office of Director of Defense Program Analysis and Evaluation | Office of the Secretary of Defense |
| USA | Office of Federal Contract Compliance Programs | OFCCP |
| abbr. | Office of General Services | OGS |
| ocean., abbr. | Office of Global Programs | OGP |
| polit., abbr. | Office Of Hearings And Mediation Services | OHMS |
| univer., abbr. | Office of Instructional Services | OIS |
| UN, abbr. | Office of Internal Oversight Services | OIOS |
| USA | Office of International Programs | OIP |
| USA | Office of Justice Programs | OJP |
| abbr. | Office of Manpower Development Program | OMDP |
| univer., abbr. | Office of Marine Programs | OMP |
| abbr. | Office of Medical Assistance Programs | OMAP |
| mil., abbr. | Office of Military Assistance Program | OMAP |
| USA | Office of Polar Programs at the National Science Foundation | OPP |
| mil., abbr. | Office of Preparedness, General Services Administration | OP/GSA |
| mil., abbr. | Office of Program Analysis and Evaluation | OPAE |
| mil., abbr. | Office of Program Appraisal | OPA |
| mil., abbr. | Office of Program Review and Resources Management | OPRRM |
| USA | Office of Quality Programs | OQP |
| NASA, abbr. | Office of Quality Services | OQS |
| USA | Office of Small Business Programs | OSBP |
| ed., abbr. | Office of Special Education and Rehabilitative Services | OSERS |
| ed., abbr. | Office of Special Education Programs | OSEP |
| abbr., scottish | Office of Strategic Services | OSS (Replaced by CIA) |
| IT, abbr. | Office of Strategic Services | OSS (later CIA) |
| FBI., abbr. | Office of Strategic Services | OSS |
| mil., abbr. | Office of Support Services | OSS |
| 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. | Office of Voluntary Programs | OVP |
| univer., abbr. | Office of Water Programs | OWP |
| USA | Office of Workers' Compensation Programs | OWCP |
| ed., abbr. | Office of Youth Programs | OYP |
| abbr. | Office of Youth Services | OYS |
| meteorol., abbr. | UCAR University Corporation For Atmospheric Research Office of Programs | UOP |
| abbr., scottish | UN Office for the Co-ordination of Humanitarian assistance to Afghanistan | UNOCHA |
