- NTMA Training Centers of Southern CaliforniaCity: Santa Fe SpringsState: California
- Oak Hills Christian CollegeCity: BemidjiState: Minnesota
- Oak Valley CollegeCity: RialtoState: California
- Oakland City UniversityCity: Oakland CityState: Indiana
- Oakwood UniversityCity: HuntsvilleState: Alabama
- Oberlin CollegeCity: OberlinState: Ohio
- Oblate School of TheologyCity: San AntonioState: Texas
- Occidental CollegeCity: Los AngelesState: California
- Oglethorpe UniversityCity: AtlantaState: Georgia
- Ohel Margulia SeminaryCity: MonseyState: New York
- Ohio Christian UniversityCity: CirclevilleState: Ohio
- Ohio Dominican UniversityCity: ColumbusState: Ohio
- Ohio Institute of Allied HealthCity: Huber HeightsState: Ohio
- Ohio Northern UniversityCity: AdaState: Ohio
- Ohio Wesleyan UniversityCity: DelawareState: Ohio
- Ohr Hameir Theological SeminaryCity: PeekskillState: New York
- Oklahoma Baptist UniversityCity: ShawneeState: Oklahoma
- Oklahoma Christian UniversityCity: EdmondState: Oklahoma
- Oklahoma City UniversityCity: Oklahoma CityState: Oklahoma
- Oklahoma Technical CollegeCity: TulsaState: Oklahoma
- Oklahoma Wesleyan UniversityCity: BartlesvilleState: Oklahoma
- Olivet Nazarene UniversityCity: BourbonnaisState: Illinois
- Omega Graduate SchoolCity: DaytonState: Tennessee
- Oral Roberts UniversityCity: TulsaState: Oklahoma
- Oregon College of Oriental MedicineCity: PortlandState: Oregon
- Orleans Technical CollegeCity: PhiladelphiaState: Pennsylvania
- Otis College of Art and DesignCity: Los AngelesState: California
- Ottawa University-Kansas CityCity: Overland ParkState: Kansas
- Ottawa University-MilwaukeeCity: BrookfieldState: Wisconsin
- Ottawa University-OnlineCity: Overland ParkState: Kansas
- Ottawa University-OttawaCity: OttawaState: Kansas
- Ottawa University-SurpriseCity: SurpriseState: Arizona
- Otterbein UniversityCity: WestervilleState: Ohio
- Ouachita Baptist UniversityCity: ArkadelphiaState: Arkansas
- Our Lady of the Lake UniversityCity: San AntonioState: Texas
- Ozark Christian CollegeCity: JoplinState: Missouri
- Pace UniversityCity: New YorkState: New York
- Pacific Bible CollegeCity: MedfordState: Oregon
- Pacific Islands UniversityCity: MangilaoState: Guam
- Pacific Lutheran UniversityCity: TacomaState: Washington
- Pacific Northwest Christian CollegeCity: KennewickState: Washington
- Pacific Northwest College of ArtCity: PortlandState: Oregon
- Pacific Northwest University of Health SciencesCity: YakimaState: Washington
- Pacific Oaks CollegeCity: PasadenaState: California
- Pacific Rim Christian UniversityCity: HonoluluState: Hawaii
- Pacific School of ReligionCity: BerkeleyState: California
- Pacific States UniversityCity: Los AngelesState: California
- Pacific Union CollegeCity: AngwinState: California
- Pacific UniversityCity: Forest GroveState: Oregon
- Paine CollegeCity: AugustaState: Georgia
- Palm Beach Atlantic UniversityCity: West Palm BeachState: Florida
- Palmer College of ChiropracticCity: DavenportState: Iowa
- Palo Alto UniversityCity: Palo AltoState: California
- Pardee RAND Graduate SchoolCity: Santa MonicaState: California
- Park UniversityCity: ParkvilleState: Missouri
- Parker UniversityCity: DallasState: Texas
- Pathways CollegeCity: PhoenixState: Arizona
- Patrick Henry CollegeCity: PurcellvilleState: Virginia
- Paul Quinn CollegeCity: DallasState: Texas
- Paul Smiths College of Arts and ScienceCity: Paul SmithsState: New York