CRF

CRF may refer to:

Science and technology

• Corticotropin-releasing factor, a polypeptide hormone
• Chromatographic response function, is 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
• Conditional random field, in machine learning, a type of graphical model
• Constant Rate Factor used by many video encoders (such as X264, X265, and VP9) that represents a constant quality value between 0 and 51 where lower is better quality.
• Controlled Release Fertiliser, a solid form fertilizer
• Coupled rangefinder camera

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)

Economy and management

• Capital recovery factor, a financial concept
• Change request form, a document containing a call for an adjustment of a system
• Consolidated Revenue Fund, also known as Consolidated Fund, the term used for the main government bank account in many Commonwealth Nations

Sports and Sporting associations

• 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, is a Brazilian football club based in Rio de Janeiro

Automotive

• Centro Ricerche Fiat is the central research organization for Fiat Automobiles S.p.A.
• Honda CRF series, a series of motorcycles

Other uses

• Carolina Renaissance Festival, a festival held annually in North Carolina, USA
• Catholic Reaction Force, was a name used by paramilitaries to issue death threats against Protestants in Northern Ireland during "The Troubles"
• Cave Research Foundation, is an American private, non-profit group dedicated to the exploration, research, and conservation of caves
• Central Readiness Force, is a military defense unit in Japan
• Charter of Rights and Freedoms, a bill of rights entrenched in the Constitution of Canada
• Clube de Regatas do Flamengo, a popular soccer team in Brazil
• Council on Foreign Relations, United States nonprofit think tank
• Air Central, ICAO airline designator CRF, an airline in Japan