Cai or CAI may refer to:
Places Cai (state), a state in ancient China Caí River, Rio Grande do Sul, Brazil Cái River, Vietnam Cairo International Airport (IATA airport code), Egypt Caithness (Chapman code), a historic county in Scotland
Organisations Canadian Airlines International, a defunct Canadian airline Capitol Archaeological Institute, an archaeological institute, part of The George Washington University, US Central Asia Institute, a non-profit organization that promotes education in Central Asia Chartered Accountants Ireland, Ireland's largest accountancy body Christian Assemblies International, an Australian-based charity organisation and religious group Club Alpino Italiano, the Italian alpine club Coleraine Academical Institution, a school in Northern Ireland College of Anaesthesiologists of Ireland, a medical training body in Ireland Community Associations Institute, an influential trade association and special interest group Compagnia Aerea Italiana, parent company of Alitalia, Italy Confederation of Australian Industry, forerunner of the Australian Chamber of Commerce and Industry Content Authenticity Initiative, an association for provenance metadata Corendon Airlines (ICAO airline code), a Turkish airline Corpo Aereo Italiano, an element of the Italian Regia Aeronautica during the Battle of Britain WCAI, a group of NPR radio stations in Massachusetts, US
Science and technology Calcium–aluminium-rich inclusion, a type of mineral Carbonic anhydrase inhibitor, in pharmacology Codon Adaptation Index, a measure of codon bias in protein-coding DNA sequences Cold air intake, of an automobile Computer-aided inspection Computer assisted instruction or e-Learning Computer-assisted language learning Conodont Alteration Index, an estimate of the maximum temperature reached by a sedimentary rock Controlled Auto-Ignition, a technology of internal combustion for reciprocating engines
Sport Club Atlético Independiente, an Argentine football (soccer) team Club Atlético Independiente (women), the women's division of the football team Comisión de Actividades Infantiles, an Argentine football (soccer) team Club Atlético Ituzaingó, an Argentine football (soccer) team Club Atletico Independiente de La Chorrera, a Panamanian football (soccer) team Club Atlético Independiente de Neuquén, an Argentine football (soccer) team
Other uses Cai (name), Welsh and alternative spelling of the name Kai Cai (surname), a common Chinese surname Comprehensive Agreement on Investment, a proposed deal between China and the European Union Mesoamerican languages (ISO 639-2 and ISO 639-5 codes) Sir Kay (Welsh: Cai), a character in Arthurian legend
See also Kai (disambiguation) CAIS (disambiguation)