Nickname •
Johnny Adair (born 1963), Northern Irish loyalist paramilitary •
Martin Allen (born 1965), English footballer •
Brett Banasiewicz (born 1994), American professional BMX rider •
Charles Brown (1933–1962), American spree killer •
Roger Caron (1938–2012), Canadian robber •
Mad Dog Coll (1908–1932), Irish-American gangster •
David C. Dolby (1946–2010), US Army Medal of Honor recipient •
Charles Gargotta (1900–1950), Italian-American gangster •
Jon Hall (programmer) (born 1950), American computer programmer •
Gene Hatcher (born 1959), American boxer •
Leslie Irvin (serial killer) (1924–1983), 1950s American serial killer •
Charles Kelley (1941–1962), American spree killer •
Bob Lassiter (1945–2006), American radio talk show host •
Vini Lopez (born 1949), American drummer •
Adam MacDougall (born 1975), Australian rugby league player •
Jeff Madden, college football strength and conditioning coach •
Greg Maddux (born 1996), American former baseball pitcher •
Bill Madlock (born 1951), American baseball player •
Mark Madsen (basketball) (born 1976), American basketball coach and former player •
Jim Mandich (1948–2011), American football player •
Jim Mattis (born 1950), American Marine Corps general and Secretary of Defense •
Archie McCafferty, Scottish-born Australian serial killer •
Brian McGlinchey (born 1977), Northern Ireland footballer •
Dominic McGlinchey (1954–1994), leader of the Irish National Liberation Army paramilitary group •
Lewis Moody (born 1978), English rugby union player •
Dan Morgan (bushranger) (1830–1865), Australian bushranger •
Robbie Muir (footballer) (born 1953), Australian rules footballer •
Edgar Ross (boxer) (1949–2012), American boxer •
Chris Russo (born 1959), American sports radio personality •
Joseph "Mad Dog" Taborsky (1924–1960), American spree killer •
Michael Taccetta (born 1947), American mobster •
Dwight White (1949–2008), American football player •
Xu Xiaodong (born 1979), Chinese mixed martial artist •
Wong Yuk-man (born 1951), Hong Kong politician
Ring name •
Mike Bell (wrestler) (1971–2008), American professional wrestler •
Pierre Lefebvre (1955–1985), French-Canadian professional wrestler •
Michel Martel (1944–1978), Canadian professional wrestler •
Mad Dog McPhie (born 1971), English professional wrestler •
Mad Dog O'Malley, Irish-American professional wrestler •
Maurice Vachon (1929–2013), French-Canadian professional wrestler ==Fictional characters==