off- - orga
- off-axis impact
- off-axis tracking
- off-center force
- off-center vision
- off-fiber
- off-nominal
- off-setting relapse
- off-the-job stressor
- off-vertical (rotation) susceptibility test
- off-vertical axis
- off-vertical rotating chair
- off-vertical rotation
- off-vertical rotation (test)
- off-vertical rotation susceptibility
- office
- office automation
- Office of Advanced Research and Technology
- Office of Aviation Medicine
- Office of Manned Space Flight
- Office of Naval Research
- officer aircrewman
- Officer and Air Crew Selection Centre
- Officer and Aircrew Selection Centre
- official emergency data form
- offsetting effect
- OGI
- Ohio State's Aviation Psychology Laboratory
- OKAN
- OKN
- OKR
- old eye
- old habit
- old hand
- old sight
- olfactometer
- olfactory hallucination
- olfactory information
- omni-environmental
- omnienvironmental full pressure suit
- on-airport accident
