CMX
CMX may refer to:

CMX (band), a Finnish rock band
CMX (DVD) by CMX
CMX (comics), a manga brand by DC Comics
Corel Presentation Exchange (CMX), a Corel Metafile Exchange file format supported by CorelDRAW
CMX Systems, a collaboration between CBS and Memorex which developed video editing systems in the 1970s
A video Edit decision list format
The IATA code (International Air Transport Association) for Houghton County Memorial Airport near Calumet, Michigan
910 in Roman numerals
Short name given to Carrickmacross by locals
Abbreviation for COMEX, a commodities exchange in the CME Group
The brand used by Cinemex for their United States locations