APX (disambiguation)

APX is a complexity class in computer science.

APX also may refer to:

Organizations

 * APX Alarm Security Solutions, a residential security company
 * Alpha Rho Chi, architects' fraternity
 * Australia Pacific Exchange
 * APX Group, an Anglo-Dutch energy exchange
 * Atari Program Exchange, an early computer software publisher

Militaries

 * Atelier de Construction de Puteaux, state arsenal belonging to the French Army
 * Beretta APX, an Italy	semi-automatic pistol
 * 47 mm APX anti-tank gun, a France anti-tank gun

Other uses

 * Ascorbate peroxidase, an antioxidant enzyme
 * Lotus APX, a 2006 concept car
 * Advanced Performance Extensions, a set of Intel x86 architecture extensions
 * Not to be confused with Intel's defunct iAPX instruction set architecture, or its iAPX branded x86 CPUs.