| Offensive team | Off-topic | Off-loom bead weaving |
| Offshore powerboat racingOffshore powerboat racing is racing by large, ocean-going powerboats, typically point-to-point racing. Probably the largest, most powerful racing machines of all, the extreme expense of the boats and the fuel required to participate make it an expensive a | Office of the United Nations High Commissioner for Human RightsThe purpose of the Office of the United Nations High Commissioner for Human Rights involves the promotion and protection of human rights worldwide through direct contact with individual governments and the provision of technical assistance where appropria | Off spinOff spin is a type of spin bowling in the sport of cricket which is bowled by an off spinner and refers to a right-handed spin bowler who uses his fingers to spin the ball from a right-handed batsman's off side towards the leg side (that is in towards the |
| 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 Sutch's early political activity Beginning in 1964, Sutch—of Screaming Lord Sutch & The Sava | OftelOftel has been superseded as the British telecommunications regulator by Ofcom (the Office of Communications).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 system | Off-hook | Office classification |
| 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 |
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| 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) |
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| 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 |
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| Ofaqim | Office for National Statistics | Ofunato, Iwate |
| Official Secrets Act | Offal | Offshore bank |
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| Offset | Office of Strategic Influence (album) | Office of Special Investigations |
| Office of the future | Off-road transport | Ofcom |
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| 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) |
