Halo

Halo may refer to:

• Halo (religious iconography), a ring of light that surrounds an object in religious iconography
• Halo (optical phenomenon), a ring of light that surrounds an object
• Halo (medicine), used to immobilize cervical neck (spinal) fractures
• Halo (comics), a DC Comics superhero
• Halo (horse), an American thoroughbred racehorse
• Halo (visualization technique), a computer interface technique that uses arcs to point users to off-screen locations
• Halo, West Virginia
• Halo (bar), a gay bar in Washington, D.C.
• HALO or High Altitude Low Opening, a form of parachute jump
• Galactic halo, a ring of gas and stars surrounding a galaxy, and in particular the Milky Way Galaxy

Video games

Halo, a notable game series which has expanded into a franchise. The game series consists of:

• Halo: Combat Evolved, a first-person shooter for the Xbox console, Windows, and Mac OS X
• Halo 2, the sequel to the first game released on the Xbox and then later for Windows
• Halo 3, the last game in the series' main story arc released for the Xbox 360
• Halo Wars, a real time strategy game based within the same fictional universe for the Xbox 360
• Halo Chronicles, an episodic game based on the series' universe which is being developed by film director Peter Jackson.

Military

• BAE HALO (High Altitude Low Observability), a military aircraft under development
• Mil Mi-26 or Halo, a heavy transport helicopter

Science

• Halo effect, a cognitive bias whereby the perception of a particular trait is influenced by the perception of the former traits
• Galactic halo, a region of space surrounding spiral galaxies
• Nuclear halo, a shape exhibited by some exotic atomic nuclei
• Halo-, a chemical prefix indicating halogen
• Halo orbit, a class of orbit around a Lagrange Point.

Popular music

• HALO is the numbering schema for albums released by the band Nine Inch Nails.
• Halo, a heavy metal song by Machine Head.
• Halo, a pop/rock song by Bethany Joy Galeotti (credited as Haley James Scott).
• Halo, a song by Porcupine Tree.

Other

• HALO Trust or Hazardous Areas Life-Support Organization, a charity for removing war debris
• Halo vehicle, an automobile marketing strategy
• Los Angeles Angels of Anaheim, sometimes referred to by fans or media as The Halos
• HALO: Hidden Alias List Operation, a fictional witness protection program in Charlie's Angels: Full Throttle
• Halo, a type of windmill breakdance move