Aux or AUX may refer to:

Science and technology

* Auxiliary connector or AUX jack, typically used for analog audio signals * Aux/IAA repressors, related to

auxin Auxins (plural of auxin ) are a class of plant hormones (or plant-growth regulators) with some morphogen-like characteristics. Auxins play a cardinal role in coordination of many growth and behavioral processes in plant life cycles and are essenti ...

plant hormones

Computing

* AUX: (for auxiliary), a DOS text device * AUX (CONFIG.SYS directive), changes assignment for AUX: device in DR-DOS * A/UX, a Unix operating system by Apple

Other uses

* Auxiliary (disambiguation) (abbreviation) * Aux (TV channel), a Canadian music TV channel * Araguaína Airport (IATA airport code), Tocantins, Brazil {{disambiguation