O

- OKB-1 "150"
- OKO Tairov Ta-3
- OMAC Laser 300
- Orlican L-40 Meta Sokol
- OTRAIR Pelican-4
- OV-099 Challenger
- OV-101 Enterprise
- OV-102 Columbia
- OV-103 Discovery
- OV-104 Atlantis
- OV-105 Endeavour
- OWJ Tazarv