PMX can refer to: Pacific Media Expo, a multi-genre convention held since 2004 in California. PMX (technology) to generate local weather information Microsoft Premium Mobile Experiences team, responsible for the KIN phones PMX-1000, a computer system-on-a-chip A very compact notation for typesetting music; also the preprocessor which expands that notation to MusiXTeX code. Pharmacometrics, a discipline that develops mathematical models of biology, pharmacology, disease, and physiology. Beretta PMX, a submachine gun produced by Italian firearm maker Beretta