Ose
- -ose
- Hellenic Railways Organisation
- Microsoft Servers
- OMA Service Environment
- OPENSTEP Enterprise
- Obras Sanitarias del Estado
- Open Source Ecology
- Open System Environment Reference Model
- Operating System Embedded
- Order of Saint Elisabeth
- Order of the Star in the East
- Osaka Securities Exchange
- Ose (band)
- Ose (demon)
- Ose, Nigeria
- Ose, Norway
- Ose, Poland
- Ose, Skye
- Osei Kofi Tutu I
- Oslo Stock Exchange
- Socialist Workers' Party (Greece)
- St Edward's School, Oxford
- Öse
- Ōse, Ehime
- Œuvre de secours aux enfants