CNF may refer to:

  • Carbon-neutral fuel
  • Cloud-Native Network Function, emerging technology in cloud computing
  • Belo Horizonte International Airport, Brazil, IATA code CNF
  • Chomsky normal form, in formal language theory, first described by Noam Chomsky
  • Configuration file, in computing, typically with file extension .cnf, .conf, .cfg, .cf, or .ini
  • Conjunctive normal form, also known as clausal normal form, in Boolean logic
  • Constant weight without fins, a freediving discipline in which usage of fins or change of ballast is prohibited

Organizations

  • Caucasus Nature Fund, a German non-profit supporting protected areas in Transcaucasia
  • Club Nacional de Football, Uruguayan football team
  • Comité National Français, a provisional government of Free France led by Charles de Gaulle
  • Commonwealth Naval Forces, former name of the Royal Australian Navy
  • Cornell NanoScale Science and Technology Facility, at Cornell University, member of the National Nanotechnology Coordinated Infrastructure

Science

  • Carbon nanofiber, cylindrical nanostructures with graphene layers
  • Cellulose nanofibre, a type of nanocellulose
  • Cytotoxic necrotising factor family, members of which are referred to as CNF followed by a number
  • Cyanogen fluoride, a cyanide compound with the chemical formula CNF