Fog is a visible mass consisting of cloud water droplets or ice crystals suspended in the air at or near the Earth's surface.

Fog or FOG may also refer to:

Poetry and books

• "Fog" (poem), by Carl Sandburg

• The Fog, a 1921 novel by William Dudley Pelley

• Fog, a 1933 novel by Valentine Williams and Dorothy Rice Sims

• Fog, a 1934 non-fiction work by Alexander McAdie

• The Fog (novel), a 1975 British horror novel by James Herbert

• The Fog, a novelization of the 1980 film by Dennis Etchison

• The Fog, a 1989 novel by Caroline B. Cooney, the first installment in the Losing Christina series

• The Fog, a 2015 novel by Alton Gansky, the eighth installment in the Harbingers series

• The Fog, a 2017 children's picture book by Kyo Maclear

Film and television

• The Fog (1923 film), 1923 American silent drama film directed by Paul Powell

• Fog (1932 film), a French Spanish-language drama

• Fog (1933 film), an American pre-Code film

The Fog (1980 film), a 1980 American horror film

• The Fog (soundtrack)

• Dhund: The Fog, a 2003 Indian thriller film

• The Fog (2005 film), an American-Canadian remake of the 1980 horror film

• "The Fog" (Mad Men), a 2009 episode of the American television series

Music

• Fog (band), an American indie rock band and hip-hop group

"Fog", a song by Radiohead released as a B-side of the 2001 single "Knives Out"

• "Fog (Again)", a song by Radiohead released on the 2004 compilation Com Lag

• "Fog", a song by Italian death metal band Sadist from Lego

• "The Fog", a song by English singer Kate Bush from her 1989 album The Sensual World

• Mgła (English: Fog), a Polish black metal band

People

• Fog (surname), list of people with the surname

• Fog (comics), fictional characters from DC Comics

Places

• Fog Bay, Antarctica

• Fog Bay, Northern Territory, Australia

• Fog Bay and Finniss River Floodplains, Australia

• Foggia "Gino Lisa" Airport, Italy

• Forest Gate railway station, England

Science and engineering

• Fats, Oils and Grease (FOG); see Grease trap

• FOG1, friend of GATA1, a protein encoded by the ZFPM1 gene

• Distance fog, a technique in 3D rendering

• Fibre optic gyroscope

• Fog computing

• Gunning fog index, a measure of text readability

• FOG Project

Other uses

• Fear, obligation and guilt, emotional blackmail

• FOG Inc., a Japanese video game developer

• Forward Observations Group, a US military lifestyle brand, active in Ukraine

• Full On Games, a Japanese video game developer

See also

• Fogg (disambiguation)

• Fogge (disambiguation)

• Fogging (disambiguation)

• Phog (disambiguation)

• London fog (disambiguation)

• San Francisco fog

• Clouding of consciousness, phrase often time called "brain fog" or "mental fog"