| Offensive team | Off-topic | Off-loom bead weaving |
| Offshore powerboat racing | Office of the United Nations High Commissioner for Human Rights | Off spin |
| Office applications suiteIn computers, an office applications suite sometimes called an office suite productivity suite offimatic suite or integrated offimatic program is a application software intended to be used by typical clerical and knowledge workers. The components are gene | Official Monster Raving Loony PartyThe Official Monster Raving Loony Party (OMRLP) is a United Kingdom political party that was founded by musician and anti-politician Screaming Lord Sutch in 1983. Sutch's early political activity Beginning in 1964, Sutch—of Screaming Lord Sutch & The Sava | OftelOftel has been superseded as the British telecommunications regulator by Ofcom (the Office of Communications). For recent information on the regulation of telecommunications in the UK (from 2004 onwards), please see the Ofcom article. The Office of Teleco |
| Office of Strategic ServicesThe Office of Strategic Services was a United States intelligence agency formed during World War II. It was the wartime (but not direct) precursor to the Central Intelligence Agency. Prior to the formation of the OSS, American intelligence had been conduc | Office International des EpizootiesThe Office International de Epizooties OIE World Organisation for Animal Health is an international intergovernmental organisation founded in 1924. In May 2001, the OIE had 158 member countries. Its headquarters in Paris, France. The OIE's claimed mission | Offa's DykeOffa's Dyke is a massive earthwork between England and Wales, running from the estuary of the River Dee in the north to the River Wye in the south (approximately 240 km). The dyke is not continuous, being built only in areas where natural barriers did not |
| Off-axis optical systemIn telecommunication, an off-axis optical system is an optical system in which the optical axis of the aperture is not coincident with the mechanical center of the aperture. Note: The principal applications of off-axis optical systems are to avoid obstruc | Off-hookIn telecommunication, the term off-hook has the following meanings: 1. In telephony, the condition that exists when an operational telephone instrument or other user instrument is in use, i. during dialing or communicating. Note: Off-hook originally refer | Office classificationOffice classification Prior to divestiture, numbers that were assigned to offices according to their hierarchical function in the U. public switched telephone network. The following class numbers are used: Class 1: Regional Center (RC) Class 2: Sectional |
| Off-line | Off-the-air | Offa of Mercia |
| Office of National Assessments | Offroad cycling | Office of Price Administration |
| Of Mice and Men | Of Mice and Men (1939 movie) | Of the Rings of Power and the Third Age |
| Ofra Haza | Off-Broadway | Office Space |
| Offspring | Office québécois de la langue française | Offerman, Georgia |
| Office of Strategic Influence | Offa's Dyke Path | Offerle, Kansas |
| Offutt Air Force Base | Official IRA | Offset logarithmic integral |
| Off-budget enterprise | Office of the Military Advisor to the Commonwealth Government of the Philippines | Offshore Patrol |
| Offside law (football) | Offside | Offside rule |
| Offenbach | Offside (rugby) | Offenbach (district) |
| Official language | Offshore construction | OFNR |
| Office of the United States Trade Representative | Offense | Office of Technology Policy |
| Official Sinn Féin | Office of Water Services | Office of Foreign Assets Control |
| Office for Harmonisation in the Internal Market | Off the Wall | Office of the Parliamentary Counsel to Government |
| OFC Nations Cup | Off-by-one error | Officer Candidate School |
| Officine Meccaniche | Officer | OFC |
| Offensive marketing warfare strategies | Officer Training School | Offensive terms per nationality |
| Office for Standards in Education | Official Code of Georgia | Office Workstations Ltd |
| Ofaqim | Office for National Statistics | Ofunato, Iwate |
| Official Secrets Act | Offal | Offshore bank |
| Offline browsing | Office of the Deputy Prime Minister | Office |
| Offset | Office of Strategic Influence (album) | Office of Special Investigations |
| Office of the future | Off-road transport | Ofcom |
| Offenbach, Hesse | Offlabel use | Official Journal of the European Communities |
| Office National d'Etudes et de Recherches Aerospatiales | Office Assistant | Official party status |
| Office politics | Office of Special Plans | Official Languages Act of Canada |
| Of Moths and Men | Off-label | Offshore company |
| Official scorer | Offshoring | Offshore outsourcing |
| Official Languages Act | Offset printing | Official Opposition (Canada) |
| Office Depot | Office supplies | Official Opposition (Australia) |
| Office of National Drug Control Policy | Office of Net Assessment | Officers Training Corps |
| Off-road | Off-side rule | Off-licence |
| Official Handbook of the Marvel Universe | Officer, Victoria | Officer South, Victoria |
| Office de Radiodiffusion Télévision Française | Off By One | Of Mice and Men (1992 movie) |
| Of Montreal | Off side | Office of Science and Technology |