A mask is a covering worn on the face, or an object depicting a face. Mask may also refer to:

Technology

Computing

Mask (computing) In computer science, a mask or bitmask is data that is used for bitwise operations, particularly in a bit field. Using a mask, multiple bits in a byte, nibble, Word (computer architecture), word, etc. can be set either on or off, or inverted from ...

, in computer science, a bit pattern used to extract information from another bit pattern ** Affinity mask, a bit mask indicating what processor a thread or process should be run on ** Image mask, applied to digital images to "cut-out" the background or other unwanted features ** umask, the default permission setting for new files on UNIX systems

Other technologies

* Photomask, used to create the circuit layers in IC fabrication * Front-end mask, an automobile accessory * Shadow mask, a technology used to manufacture cathode ray tube televisions that produce color images * Spectral mask, a mathematically defined set of lines applied to the levels of radio transmissions in telecommunications

Arts and media

Film and television

* ''Mask'' (1985 film), a film directed by Peter Bogdanovich * ''Mask, the'' (1994 film), a film starring Jim Carrey * ''M.A.S.K.'' (franchise), a media franchise comprising toys, animated series, and other media * ''M.A.S.K.'' (TV series), an animated television series, part of the ''M.A.S.K.'' media franchise * ''Mask'' (2015 TV series), a South Korean television series * ''Mask'' (2018 film), a Bengali film directed by Rajiv Biswas * ''Mask'' (2019 film), a Malayalam film directed by Sunif Hanif * ''Masks'' (1929 film), a German film directed by Rudolf Meinert * ''Masks'' (1987 film), a French film directed by Claude Chabrol * ''Masked'' (film), a 1920 Western starring Hoot Gibson * "Masks" (''Star Trek: The Next Generation''), a 1994 seventh season episode of the TV series ''Star Trek: The Next Generation'' * Masked (The Secret Circle), an episode of the TV series The Secret Circle

Other fiction

* Mask (''Forgotten Realms''), a deity in the ''Dungeons & Dragons Forgotten Realms'' campaign setting * ''Masks'' (''Angel'' comic), a comic based on the ''Angel'' television series * Mask (DC Comics), a fictional DC Comics character * Masks, an eight issue mini series by Dynamite Entertainment * Mask De Mascline, a fictional character from '' Bleach''

Music

* ''Mask'' (Aco album), 2006 * ''Mask'' (Bauhaus album), 1981 * ''Mask'' (Fanatic Crisis album), 1996 * ''Mask'' (Roger Glover album), 1984 * ''Mask'' (Vangelis album), 1985 * "Mask" (Dream song), 2021 * "Mask" (Ayumi Hamasaki song), 2022 * "Mask", a song by James from the album '' Living in Extraordinary Times'' * "Masks", a song by Prodigal from the album '' Electric Eye'' * Mask, a 1980s rock band whose vocalist was José Fors

Other arts

* Masking (art), materials used to protect portions of a work from unintended change, such as masking tape, frisket, and stencils * Masking (illustration), a drawing technique that originated in Japan

Other uses

* "Mask", nickname of Charles Lewis Jr. (1963–2009), co-founder of clothing line TapouT * MASK, an MI5 operation (1934–1937) that decrypted Communist International radio communications * Mask, Mazandaran, a village in Mazandaran Province, Iran * Mask, South Khorasan, a village in South Khorasan Province, Iran * Lough Mask, a lake in Mayo County, Ireland