OHP is a three-letter acronym that may refer to:
- Occupational health psychology
- an Overhead projector
- Observatoire de Haute-Provence, an astronomical observatory in France
- An Oliver Hazard Perry class frigate
- The Oklahoma Highway Patrol
- The Oregon Health Plan, the State of Oregon's Medicaid program.
- Official Home Page (internet term)
- Open House Party, an American syndicated radio show
- Open Humanities Press, an open access publishing initiative in humanities disciplines.
- Overhead press, a weight training exercise which focuses on the shoulders.