On-off

On-off or Onoff may refer to:
 * On-off control, a type of feedback controller
 * On-off keying, a type of line modulation
 * On-off relationship, a form of personal relationship
 * On-Off Singles, a type of tennis game
 * On-off switch, a type of electric switch
 * Onoff (retailer), an electronics retailer in Estonia, formerly also active in Sweden and Finland

Music

 * Onoff (Irish band), an Irish punk-rock band
 * On/Off (Japanese band), a Japanese j-pop band
 * On/Off (ONF EP), 2017
 * On/Off (Run On EP), 1995
 * On-Off (album), a 2006 album by Marcin Rozynek