NF may refer to:

Science and medical
  • Neurofibromatosis, a medical disorder in which nerve tissues grow tumors
  • Necrotizing fasciitis, a disease commonly known as flesh-eating bacteria
  • Nod factor, a kind of molecule
  • Noise figure, a concept in radar signal processing
  • National Formulary, a manual of medicines
Companies and organizations
  • Air Vanuatu, IATA airline designator NF
  • National Front (disambiguation), the name of many political parties
  • NF Board, a football association
  • Nuestra Familia, a criminal organization
  • Newfoundland and Labrador, a Canadian province, former postal code NF
  • Norfolk Island, part of the Commonwealth of Australia
Other uses
  • New Foundations, an axiomatic set theory in mathematical logic
  • Normal forms (databases), criteria for determining a table's degree of vulnerability to logical inconsistencies and anomalies.