CRF

CRF may refer to:

Science and technology

 * Corticotropin-releasing factor family, a family of related neuropeptides in vertebrates
 * Corticotropin-releasing hormone or corticotropin-releasing factor, a polypeptide hormone
 * Chromatographic response function, a coefficient which characterizes the quality of the separation in the result of a chromatography
 * Coefficient of rolling friction, a coefficient that measures the rolling resistance
 * Cloud radiative forcing, the difference between the radiation budget components for average cloud conditions and cloud-free conditions
 * Chemotactic range fitting, a phenomenon in which organisms direct their movements according to certain chemicals
 * Controlled-release fertiliser, a solid form fertilizer
 * Coupled rangefinder camera
 * Case report form, used in clinical trial research

Computing

 * Conditional random field, in machine learning, a type of graphical model
 * Constant Rate Factor, used video encoders such as x265, and VP9, and AV1 as a bitrate control method.

Medicine

 * Cardiorespiratory fitness
 * Case report form, in a clinical trial, the document showing all the evaluated patient data
 * Cancer-related fatigue
 * Chronic renal failure, also known as chronic kidney disease (CKD)

Economics and finance

 * Capital recovery factor, a financial concept
 * Consolidated Revenue Fund, the main government bank account in many Commonwealth Nations

Organisations

 * Catholic Reaction Force, a name used by paramilitaries to issue death threats against Protestants in Northern Ireland during "The Troubles"
 * Cave Research Foundation, an American private, non-profit group dedicated to the exploration, research, and conservation of caves
 * Central Readiness Force, a military defense unit in Japan
 * Centro Ricerche Fiat, the central research organization for Fiat; see Blue&Me
 * Air Central (ICAO airline designator), an airline in Japan

Sports

 * Circle rules football, a variation on football with only one goal
 * Cyprus Rugby Federation, the governing body for rugby union in Cyprus
 * Clube de Regatas do Flamengo, a Brazilian football club based in Rio de Janeiro

Other uses

 * Honda CRF series, a series of motorcycles
 * Carolina Renaissance Festival, a festival held annually in North Carolina, US
 * Charter of Rights and Freedoms, a bill of rights entrenched in the Constitution of Canada