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Hum usually refers to humming, a sound produced with closed lips, or by insects, or other periodic motion.

Hum may also refer to:

Location and geography[edit]


  • The Hum, a phenomenon involving a persistent and invasive low-frequency noise of unknown origin which occurs in some geographic locations.
  • Mains hum, an electric or electromagnetic phenomenon that causes a low frequency (50 or 60 Hz) audible signal
  • Venous hum, a humming sensation caused by normal pressure in the jugular veins



  • Hum (film), a 1991 Bollywood film starring Amitabh Bachchan


  • Hum (band), a band from Champaign, Illinois, USA.