CRF or 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, a camera fitted with a rangefinder
  • Case report form, a document in clinical trial research

Computing

  • Conditional random field, in machine learning, a type of graphical model
  • Constant Rate Factor, in video encoders (x265, and VP9, and AV1), a bitrate control method

Medicine

  • Cardiorespiratory fitness, a medical term
  • Case report form, in a clinical trial, the document showing all the evaluated patient data
  • Cancer-related fatigue, fatigue experienced with cancer patients
  • 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

  • Coalition for Religious Freedom, a group affiliated with the Unification Church also aka International Coalition for Religious Freedom
  • 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 (Japan), a defunct regional airline of Japan (1988–2010)

<!--* Crisis Response Force, also known as Commanders-in Extremis-Force (CIF), a direct action unit of the US Army Special Forces (fails WP:DABMENTION / WP:DABACRO)-->

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, United States
  • Charter of Rights and Freedoms, a bill of rights entrenched in the Constitution of Canada
  • Caramanta language, an ISO 639-3 code

<!--* Change request form, a document containing a call for an adjustment of a system (fails WP:DABACRO)-->