CLS may refer to:

Academic fields

  • Critical legal studies, school of legal philosophy
  • Constrained least square statistical estimator
  • CLs method to set bounds on particle physics model parameters
  • The .cls file extension, used to hold LaTeX manuscripts - see LaTeX § Compatibility and converters

Education

  • California Labor School, San Francisco, US 1942–57
  • City of London School, UK
  • Covington Latin School, Kentucky, US
  • Crystal Lake South High School, Illinois, US
  • Chicago Law School at The University of Chicago, US
  • Columbia Law School at Columbia University, US
  • Concordia Lutheran Seminary, Alberta, Canada
  • Cornell Law School at Cornell University, US
  • Critical Language Scholarship Program of the US State Department

Societies and associations

  • Caribbean Labour Solidarity, based in London, UK
  • Chicago Linguistic Society
  • Chinese Language Society
  • Christian Legal Society
  • Communist League of Struggle, US, 1931–1937

Software and technology

  • Cable landing station, where a submarine cable comes ashore
  • Common Language Specification, Microsoft
  • CLS (command) to clear computer screen in several environments
  • CLS (CONFIG.SYS directive), in DR-DOS
  • Creative Lighting System, in Nikon speedlights

Medical and science

  • Computational Science, an academical research discipline
  • Canadian Light Source, a synchrotron light source
  • Clinical laboratory science, another name for Medical Technology or Medical Laboratory Science
  • Combat lifesaver, US non-medical military role

Music

  • City of London Sinfonia
  • CLS Music, a record label

Transportation and vehicles

  • Capsule launch system for space capsules
  • Mercedes-Benz CLS-Class, automobile models
  • CLS, the station code of Chester-le-Street railway station, England

Business and finance

  • CLS Group, a global financial market utility
  • Celestica, New York Stock Exchange symbol
  • CLS Communication, translation services
  • CLS Holdings, UK investment company
  • Core Labor Standards, ILO
  • Crown Liquor Saloon, ornate bar in Belfast, Northern Ireland

Construction

  • Canadian Lumber Standard