The initialism CHI may refer to: Health Catholic Health Initiatives, a hospital network in the United States Child Health International, UK-based charity Commission for Health Improvement, former UK body Community Health Index, Scotland Comprehensive health insurance Creatinine height ratio, estimating protein in body composition Places & Sports Teams An abbreviation for the U.S. city of Chicago, Illinois and its major professional sports teams Chicago Bears of the National Football League Chicago Blackhawks of the National Hockey League Chicago Bulls of the National Basketball Association Chicago Cubs, also CHC, of Major League Baseball Chicago Fire of Major League Soccer Chicago White Sox, also CWS, of Major League Baseball Chile (in sports: IOC and FIFA code CHI) Channel Islands, a UK dependency (Chapman code: CHI) Science and technology Carvill Hurricane Index Computer–human interaction or human–computer interaction CHI (conference) CHI (compiler), an Intel C compiler for heterogeneous integration Hyperbolic cosine integral, in trigonometry Transit Chingford railway station, United Kingdom — railway station code CHI, the IATA code for all Chicago airports CHI, the Amtrak code for Chicago Union Station Other Chichester and Harbour Independents, a minor British political party (Chichester, England) Columbia Helicopters, an American aircraft manufacturer CHI, one of Longwood University § Secret societies (Virginia, USA) Cationic Hydration Interlink, a hair-care brand owned by Farouk Systems (founded by Farouk Shami). See also Chi (disambiguation) Chic (disambiguation) Chik (disambiguation)