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- Oak Ridge Associated UniversitiesOak Ridge Associated Universities (ORAU) is a consortium of American universities headquar
- ObscurantismPractice of obscuring information
- Office of Career, Technical, and Adult EducationThe Office of Career, Technical, and Adult Education (OCTAE) formerly Office of Vocational
- OfstedUnited Kingdom government department for educational standards
- Olga BridgmanAmerican physician and academic (1886–1974)
- Olive Moorman LeaderOlive Ann Moorman Leader (July 28, 1852 – April 9, 1930) was a temperance reformer, suffra
- Olive P. LesterAmerican psychologist
- Olivia GudeAmerican artist and educator (born 1950)
- Online degreeType of academic degree
- Ontario Disability Support ProgramLast resort income support program
- Open educational resourcesOpen learning resource
- Order of BarbadosThe Order of Barbados is a national Order of honours and decorations for Barbados.
- Order of the Nation (Antigua and Barbuda)The Most Distinguished Order of the Nation is an Antiguan and Barbudan order of chivalry r
- Oregon Chief Education OfficeThe Oregon Chief Education Office was a government agency created by statute (Senate Bill
- Oregon Higher Education Coordinating CommissionVolunteer panel to advise the state government on higher education policy decisions
- Organization workshopBusiness education workshop
- Orishatukeh FadumaChristian missionary and educator (1855–1946 AD)
- Osteopathic medicine in the United StatesBranch of the medical profession
- Otto Frederick HunzikerAmerican dairy educator (1873–1959)
- Outcome-based educationEducational system based on the desired goals
- Outdoor educationOrganized learning that takes place in the outdoors
- Overhead projectorDevice that projects a transparent image
- OxbridgeUniversities of Oxford and Cambridge

