Sign (disambiguation)

Look up sign in Wiktionary, the free dictionary.

A sign is an entity which indicates another entity.

Sign may also refer to:

Signage
Sign (semiotics)
Sign (linguistics)
Sign language
Sign (mathematics), an indication of negative and positive numbers
- Sign function, also known as the signum function
- Sign of a permutation
Astrological sign
Medical sign
Project Sign, a project by the U.S. Air Force to investigate unidentified flying objects (UFOs)
Servicio de Inteligencia de la Gendarmería Nacional or Inteligencia de la Gendarmería Nacional Argentina, the Argentine intelligence service
Scottish Intercollegiate Guideline Network, a Scottish group that develops evidence based medical guidelines

Music

Sign (band), an Icelandic band
"Sign" (Mr. Children song)
"Sign" (Beni Arashiro song)
"Sign" (Marcella Detroit song), from Dancing Madly Sideways (2001)
"Sign", a song by Susumu Hirasawa
- "Sign-2", a different version of "Sign" from Berserk: Millennium Falcon Hen Seima Senki no Shō
"The Sign" (song), a 1993 song by Ace of Base