COMDEX是计算机经销商博览会（COMputer DEaler's eXpo）的英文缩写， 会上主要展示计算机最新的硬件、软件、外围设备、网络产品和最新的技术。首届举办于1979年，曾被认为是信息产业的第一盛会，可是进入21世纪以后，该展会日益萧条衰弱。2005年的COMDEX被最终取消，而这一展会的命运至今未卜。

COMDEX (an abbreviation of Computer Dealers' Exhibition) was a computer expo held at various locations in the Las Vegas Valley of Nevada, USA, each November from 1979 to 2003. It was one of the largest computer trade shows in the world, usually second only to the German CeBIT, and by many accounts one of the largest trade shows in any industry sector, and COMDEX exhibitions have been held in many other countries from 1982 to 2005, altogether 185 shows. The first COMDEX was held in 1979 at the MGM Grand (now Bally's), with 167 exhibitors and 3904 attendees. In 1981, the first COMDEX/Spring was held in New York City.