Mad, mad, or MAD may refer to:
Geography
- Mad (village), a village in the Dunajská Streda District of Slovakia
- Mád, a village in Hungary
- Adolfo Suárez Madrid–Barajas Airport, by IATA airport code
- Mad River (disambiguation), several rivers
Music
Bands
- Mad (band), a rock band from Buenos Aires, Argentina
- M.A.D (band), a British boyband
- M.A.D. (punk band), a 1980s band, which later became Blast
- Meg and Dia, an American indie rock band
Albums
- Mad (Raven EP), released in 1986
- Mad (Hadouken! EP), released in 2009
- Mad (GOT7 EP), released 2015
Songs
- "Mad" (Ne-Yo song), released in 2008
- "Mad", a 1964 song by Dave Dudley from Talk of the Town
- "Mad", a 1968 song by Harpers Bizarre from Secret Life of Harpers Bizarre
- "Mad", a 1989 song by The Lemonheads from Lick
- "Mad", a 2010 song by Magnetic Man from the album Magnetic Man
- "Mad", a 2014 song by Cassie Steele
- "M・A・D" (Buck-Tick song), released in 1991
Organizations
- MAD Studio, an architectural firm
- Make A Difference, an Indian NGO
- Might and Delight, a Swedish video game development studio
- Militärischer Abschirmdienst, German agency responsible for military counterintelligence
- Museum of Arts and Design, New York City, US
- Mechanical Art and Design museum, in Stratford-upon-Avon
Science and technology
- MAD (programming language), for Michigan Algorithm Decoder
- Magnetic anomaly detector, detects minute variations in Earth's magnetic field
- Methodical Accelerator Design, a CERN scripting language
- MPEG Audio Decoder, audio decompression software
- Multi-conjugate Adaptive optics Demonstrator, an astronomical method
- Multi-wavelength anomalous dispersion, a technique used in X-ray crystallography
- Maritime anomaly detection in Global Maritime Situational Awareness, for avoiding maritime collisions
- Mothers against decapentaplegic, a gene discovered in Drosophila
Statistics
- Mean absolute deviation, a measure of the variability of quantitative data
- Mean absolute difference, a measure of statistical dispersion
- Median absolute deviation, a statistical measure of variability
Television and video
- Mad TV, a 1995–2009 American sketch comedy television series inspired by Mad magazine
- Mad (TV series), a 2010–2013 television series on Cartoon Network based on the magazine
- MAD TV (Greece), a Greek music channel
- M.A.D. (Indian TV programme), a 2005–2010 Indian children's educational television programme that aired on Pogo TV
- M.A.D., the evil organization run by Doctor Claw in Inspector Gadget
- "M.A.D." (Veronica Mars), a 2005 episode of the American television series Veronica Mars
- MAD, music anime douga, a Japanese term for fan-made anime music video
Other uses
- Mad (magazine), an American humor magazine
- Mad, a term for insanity used chiefly in British English
- Mad, a term for anger used chiefly in US English
- Mutual assured destruction, nuclear warfare deterrence concept
- Mandibuloacral dysplasia
- MAD Moroccan dirham (ISO 4217 code), the currency of Morocco
- mad, the ISO 639-2 code for the Madurese language