Lockout may refer to:

  • Lockout (industry), a type of work stoppage
  • Lockout (film), a 2012 science fiction action film
  • Lockout chip, a computer chip in a video game system to prevent use of unauthorized software
  • Lock-out device, part of a signaling system used on game shows
  • Regional lockout, a barrier to prevent media use outside of a specific region
  • Lockout-tagout, a procedure to prevent unsafe activation of machinery
  • A period in some hostels during which guests are disallowed from the premises