Hiss

Hiss or Hissing may refer to:


 * Hiss (electromagnetic), a wave generated in the plasma of the Earth's ionosphere or magnetosphere
 * Hiss (surname)
 * Hissing (manhwa), a Korean manhwa series by Kang EunYoung
 * Noise (electronics) or electronic circuit hiss, white noise present at low level in all electronic circuits
 * Sibilant, a group of consonants that have a hissing or hushing sound
 * Tape hiss, high-frequency noise on analogue magnetic tape recordings
 * The Hiss, a five piece rock band from Atlanta, Georgia
 * Honda Ignition Security System, a vehicle immobiliser
 * A sound made by snakes, cats and various other animals as a warning; see list of animal sounds
 * "Hiss" (song), a 2024 song by Megan Thee Stallion

In fiction

 * King Hiss, the villainous king of the Snake Men in Mattel toy line Masters of the Universe
 * Sir Hiss, Prince John's fictional sidekick in the 1973 animated Disney movie Robin Hood
 * H.I.S.S., High Speed Sentry, a fictional vehicle in the G.I. Joe universe