Brownout may refer to:

Brownout (electricity), drop in voltage in an electrical power supply Brownout (software engineering), a technique to make applications more tolerant to capacity shortages Brownout (aeronautics), reduced flight visibility due to airborne particles, especially from helicopter downwash Brownout (band), a band from Austin, Texas See also Greyout, a transient loss of vision caused by hypoxia Redout, a medical symptom caused by negative g-force Blackout (disambiguation) Whiteout (disambiguation) Eddie Leonski (1917–1942), American soldier and serial killer, responsible for the strangling murders of three women in Melbourne, Australia, also known as "The Brownout Strangler"