As a nickname, Mac may refer to:
Contents
In arts and media
Mac Brandt (born 1980), American actor
Mac Curtis (1939–2013), American musician
Mac DeMarco (born 1990), Canadian singer-songwriter, musician and producer
Mac Lethal (born 1981), American rapper, songwriter and author
Mac Martin (1925-2022), American bluegrass musician
Mac McNeilly (born 1960), American drummer
Mac Miller (1992–2018), American rapper and record producer
Malcolm John "Mac" Rebennack (1940–2019), better known by the stage name Dr. John, American singer-songwriter, pianist and guitarist
Mac Sebree (1932–2010), American journalist, writer and publisher
McLean Stevenson (1927–1996), American actor
Mac Wiseman (1925–2019), American bluegrass singer
Akshay Kumar (born 1967), Indian film actor, known as "Mac" after the character portrayed by him in the 2005 comedy film Garam Masala
Stanley McMurtry (born 1936), British cartoonist who used the pen name "Mac"
In sport
Mac Cody (born 1972), American National Football League player
Mac Colville (1916–2003), Canadian National Hockey League player
Mac Evans (1884–1977), Australian cricket and soccer player
Mac Foster (1942–2010), American heavyweight boxer
Mac Hippenhammer (born 1998), American football player
Mac Jones (born 1998), American football player
Mac May (born 1999), American volleyball player
Mac McCain (born 1998), American football player
Clark McConachy (1895–1980), New Zealand billiards and snooker player
Stan McCormick (1923–1999), English rugby league footballer and coach
Mac McClung, NBA G-League player
Mac McWilliams (born 2001), American football player
Macdonald Smith (1892–1949), Scottish golfer
Mac Suzuki (born 1975), Major League Baseball pitcher from Japan
Mac Wright (cricketer) (born 1998), Australian cricketer
In other fields
Malcolm Baldrige Jr. (1922–1987), American businessman and United States Secretary of Commerce
McGeorge Bundy (1919–1996), United States National Security Advisor to Presidents John F. Kennedy and Lyndon B. Johnson
Mac Kittredge, American politician
Charles H. MacDonald (1914–2002), American World War II fighter ace
Linious "Mac" McGee (1897–1988), Alaskan aviation pioneer and founder of McGee Airways