Mad dog may refer to:
Music
- [[[Mad Dog (album)|Mad Dog (album)]], an album by John Entwistle
- "Mad Dog", a song by America from Holiday
- "Mad Dog", a song by Deep Purple from The House of Blue Light
- "Mad Dog", a song by Pentagram from Sub-Basement
People
- Johnny Adair (born 1963), Northern Irish loyalist paramilitary
- Martin Allen (born 1965), former footballer and current Gillingham F.C. manager
- Roger Caron (1938â€"2012), Canadian robber
- Mad Dog Coll (1908â€"1932), Irish-American gangster
- David C. Dolby (1946â€"2010), US Army Medal of Honor recipient
- Charles Gargotta (1900â€"1950), Italian-American gangster
- Jon Hall (programmer) (born 1950), American computer programmer
- Bob Lassiter (1945-2006), American radio talk show host in the 1980s and 1990s
- Vini Lopez (born 1949), American drummer
- Adam MacDougall (born 1975), Australian rugby league player
- John Madden (ice hockey) (born 1973), Canadian ice hockey player
- Joe Maddock (rugby union) (born 1978), New Zealand retired rugby union player
- Greg Maddux (born 1966), American baseball pitcher
- Bill Madlock (born 1951), American baseball player
- Mark Madsen (born 1976), American basketball coach and former player
- Jim Mandich (1948â€"2011), former National Football League tight end
- James Mattis (born 1950), American Marine Corps General and Secretary of Defense
- Michael "Mad Dog" Mavridoglou (born 1978), American musician
- Dominic McGlinchey (1954â€"1994), Irish republican paramilitary member
- Mad Dog McPhie (born 1971), English professional wrestler
- Jay Michaels, Canadian broadcast personality
- Lewis Moody (born 1978), English retired rugby union player
- Robbie Muir (footballer) (born 1953), former Australian rules footballer
- Mad Dog O'Malley, Irish-American professional wrestler in the 1990s and 2000s
- Emanuel Pogatetz (born 1983), Austrian footballer
- Mad Dog Rex, a professional wrestler from All-Star Wrestling
- Chris Russo (born 1959), American sports radio personality
- Joseph "Mad Dog" Taborsky (1924â€"1960), American executed murderer
- Maurice Vachon (1929â€"2013), French-Canadian professional wrestler
- Raymond Wong Yuk-man (born 1951), Hong Kong politician
Fictional characters
- Mad Dog Branzillo, in the book A Swiftly Tilting Planet by Madeleine L'Engle
- Tim Johnson, from To Kill a Mockingbird by Harper Lee
- Buford "Mad Dog" Tannen, from the movie Back to the Future Part III
- Mad Dog Klaus von Wolfstadt, from the manga Maiden Rose
- Mad Dog, nickname of Wayne Dobie in the film Mad Dog and Glory
- Mad Dog, from the John Woo film Hard Boiled
- Johnny Mad Dog, from the film of the same name by Jean-Stéphane Sauvaire
- Mad Dog, from the movie Ong Bak, starring Tony Jaa
- Mad Dog, from the movie The Raid: Redemption, starring Iko Uwais
- Sgt. Mick Belker, from the television series Hill Street Blues
- Tommy "Mad Dog" McCulum, from the South African TV series Isidingo
- Mad Dog Rassitano, a bounty hunter in the Marvel Universe
- Mad Dog (comics), various fictional characters
- Bill Rizer, in the American localization of the Nintendo video game Contra
- Mad Dog, a character in the Nintendo DS game Contra 4
- Lucas Friar, from the television series Girl Meets World
Other uses
- Mad Dog (oil platform), in the Gulf of Mexico
- Mad Dog Knives, a knifemaking company
- MD 20/20, a bum wine
- MadDog, the mascot of the Northeastern University Rugby Club
- McDonnell Douglas MD-80 family of commercial jet liners, nicknamed Mad Dog
- "Mad Dog", an episode of the 1975 television series Survivors
See also
- Mad Dogs (disambiguation)
- Wanderlei Silva (born 1976), Brazilian mixed martial artist nicknamed Cachorro Louco (Portuguese for "mad dog")
- Madd Dogg, a video game character in Grand Theft Auto: San Andreas
- Mad-dog skullcap (Scutellaria lateriflora), a plant
- Mad Dogs and Englishmen (disambiguation)
- All pages with a title containing Mad Dog