HX

HX, Hx, Hx, or hx may refer to:

Businesses and brands

 * Dolby HX and Dolby HX Pro, headroom extensions for analog recording
 * Hummer HX, a concept automobile
 * RMMV HX range of tactical trucks, military trucks
 * Hong Kong Airlines (IATA code)

Other uses

 * Ĥ, a character in the Esperanto language
 * , the file extension for the Haxe programming language
 * HX (convoy), a convoy code used during World War II
 * Hx or Hx, medical history
 * HX postcode area, England, covering the Halifax area
 * Short name for Harolds Cross, a suburb of Dublin, Ireland.
 * Hydrogen halide, a chemical compound
 * Informal engineering shorthand for heat exchanger
 * Human experience, see Customer experience (CX), User experience (UX).

Film

 * HX, a 2002 British film; co-production with Pathé
 * HXII, a 2005 British film; co-production with Pathé and Fuzzy Door Productions