Fax, short for facsimile, is a telecommunications technology used to transfer copies of documents over the telephone network.

Fax or FAX may also refer to:

Media Fax (Argentine TV show), between 1991 and 1992 Fax (Pern), a character in Anne McCaffrey's Dragonriders of Pern series Fax (TV series), BBC children's show between 1985 and 1988 Fax (video game), a trivia arcade game

Other FAX +49-69/450464, a German record company releasing ambient music FlyAsianXpress, commonly known as FAX, an airline operating in Malaysia Fresno Area Express, a public transit agency operating in Fresno, California Fax (surname), various people fax, ISO 639 code for the Fala language Fax, a mostly obsolete term for head hair

See also FACS (disambiguation) Faxe, a town in Denmark