QM may refer to:
QML (Qt Modeling Language) is a user interface markup language. It is a declarative language (similar to CSS and JSON) for designing user interface–centric applications.
Qmusic (previously written as Q-music) is a Dutch commercial radio station which has been broadcasting since August 31, 2005. The station is owned by the Belgian media company De Persgroep.
qmail is a mail transfer agent (MTA) that runs on Unix. It was written, starting December 1995, by Daniel J.
Qmusic (formerly Q-music) is a Flemish commercial radio station of media company Medialaan. In 2016, Qmusic is the biggest commercial radio station and the third largest radio station in Flanders.
QMobile (Urdu:کیو موبائل) is a Karachi based consumer electronics company which markets smartphones in Pakistan.
Qmillion (born Keith Lewis, in the US), is a record producer, mix engineer, composer, and writer based in Los Angeles.
The hybrid QM/MM (quantum mechanics/molecular mechanics) approach is a molecular simulation method that combines the strengths of the QM (accuracy) and MM (speed) approaches, thus allowing for the study of chemical processes in solution and in proteins.
QMA and QN connectors are quick-connect RF connectors that were designed to replace the widely used SMA (used in low power transmissions; DC–18 GHz) and Type N (used in medium power transmissions; DC–11 GHz) connectors.