Sign singing or Karaoke signing is singing using sign language. Typically a song is played, and the "singer" expressively performs a sign language version of the lyrics.

Well-known sign singers include the Japanese Tomoko Nakayama, a follower of Nichiren Buddhism, and the bawdy Australian duo Dislabelled. In London in 2003, a series of "Deaf Idol" events were held where deaf participants competed in karaoke singing, dance etc, in a similar format to the TV show Pop Idol.

Sign singing is featured in the movie Napoleon Dynamite.