OU
- 1 Utama
- Croatia Airlines
- Eyeglass prescription
- Hong Kong Metropolitan University
- Nam Ou
- Oakland University
- Oakwood University
- Oglethorpe University
- Ohio University
- Ohu University
- Okayama University
- Olivet University
- Onomichi City University
- Open University
- Open University of Mauritius
- Organizational Unit
- Orthodox Union
- Osaka University
- Osmania University
- Osnabrück University
- Otemae University
- Ou (digraph)
- Ou (ligature)
- Ou (surname)
- Our Ukraine (political party)
- Over unity
- Ruthenian language
- Tōhoku region
- Uk (Cyrillic)
- University of Oklahoma
- University of Otago
- University of Ottawa
- University of Oxford
- Wang (surname)
- Ōu Main Line
- Ōu Mountains
- ʻŌʻū