CWI is an abbreviation for the following organizations/institutions:

  • Centrum Wiskunde & Informatica, Amsterdam, The Netherlands
  • College of Western Idaho, a new Community College in Nampa, Idaho
  • Committee for a Workers' International, an international socialist organisation
  • Communist Workers' International
  • Country Women's Institute
  • Christian Witness to Israel
  • Care for the Wild International
  • Civil War Institute at Gettysburg College
  • Canadian Wrestling International, a Canadian professional wrestling promotion based in Brantford

CWI can also refer to:

  • Certified Welding Inspector, a certification from the American Welding Society
  • Chicago and Western Indiana Railroad
  • Child Well-Being Index
  • Civil War: The Initiative, a comic book crossover storyline.
  • Comparable Wage Index
  • Creditworthiness Index
  • Cloverway Inc., a Japanese Animation dubbing company in the United States