CIX

CIX can refer to:


 * CIX (website), an online conferencing system that started as an early British dial-up service provider
 * FAP Captain José Abelardo Quiñones González International Airport, an airport in Peru
 * Commercial Internet eXchange, a forerunner of the commercial Internet in the US
 * 109 (disambiguation) in Roman numerals
 * CIX (band), a South Korean boy group
 * Croatian Internet eXchange, Internet exchange point in Croatia