CLN

CLN may refer to:

In computing and technology

  • Class Library for Numbers, a free software project
  • CLN (technology), Cheng Low NOx Emission Control Technology
  • Computer Learning Network, a technical school (college) in Mechanicsburg, Pennsylvania

In politics and government:

  • Certificate of Loss of Nationality, an American form
  • Comitato di Liberazione Nazionale, the underground political entity of Italian Partisans during the German occupation of Italy

In other fields:

  • City Light News, a Christian monthly newspaper
  • abbreviation for Chapeltown railway station, in South Yorkshire
  • Credit-linked note, a security issued by a special purpose company or trust
  • Sri Lanka's International Telecommunications Union abbreviation