CRF
- AV1
- Air Central (Japan)
- Cancer-related fatigue
- Capital recovery factor
- Cardiorespiratory fitness
- Carolina Renaissance Festival
- Case report form
- Catholic Reaction Force
- Cave Research Foundation
- Central Readiness Force
- Charter of Rights and Freedoms
- Chemotactic range fitting
- Chromatographic response function
- Chronic renal failure
- Circle rules football
- Cloud radiative forcing
- Clube de Regatas do Flamengo
- Coalition for Religious Freedom
- Coefficient of rolling friction
- Conditional random field
- Consolidated Revenue Fund
- Controlled-release fertiliser
- Corticotropin-releasing factor family
- Corticotropin-releasing hormone
- Coupled rangefinder camera
- Cyprus Rugby Federation
- Honda CRF series
- International Coalition for Religious Freedom
- VP9