- ovum
- OVV quasar
- OVV类星体
- OV轨道飞行器
- O/W
- Owen bridge
- Owendo
- Owen D.Young
- Owen Jones
- Owen-Mazrui Convention
- Owens Valley Radio Observatory
- Owicki-Gries logic
- Owicki-Gries逻辑
- OWL
- Owl Cluster
- Owl Nebula
- OWL-S
- owl-shaped bronze vessel
- owl-tail ridge ornament
- owner
- owner of cargo
- owner of copyright
- ownership
- ownership of advertising
- ownership of forest resources