Seal commonly refers to:

  • Pinniped, a diverse group of semi-aquatic marine mammals, many of which are commonly called seals.
  • Seal (emblem), an emblem used as a means of authentication; both an impression in paper, wax, clay or other medium, and the device used
  • Seal (mechanical), a device which helps prevent leakage, contain pressure, or exclude contamination where two systems join
  • variant of English for decal or sticker

Seal may also refer to:





  • Fairey Seal, a 1930s British carrier-borne torpedo bomber aircraft
  • HMS Seal, two Royal Navy ships and one submarine
  • USS Seal, two American submarines
Special forces




  • Seal of the prophets, a title given to the Islamic prophet, Muhammad
  • Seal script, ancient Chinese calligraphy
  • Security seal, a device used to show whether a locking device has been opened
  • "Seal", a generic term for the surface treatment of sealed roads (and by extension, a term used for the roads themselves)