Zac is a masculine given name, often a short form (hypocorism) of Zachary or Zechariah. It may refer to:
People:
Zac Alexander (born 1989), Australian professional squash player
Zac Brooks (born 1993), American National Football League player
Zac Brown (born 1978), lead singer and guitarist of the American country music band Zac Brown Band
Zac Clarke (born 1990), Australian rules footballer
Zac Curtis (born 1992), American Major League Baseball pitcher
Zac Dalpe (born 1989), Canadian National Hockey League player
Zac Dawson (born 1986), Australian rules footballer
Zac Dysert (born 1990), American National Football League quarterback
Zac Efron (born 1987), American actor and singer
Zac Elkin (born 1991), South African cricketer
Zac Evans (born 1991), Welsh footballer
Zac Farro (born 1990), American musician
Zac Goldsmith (born 1975), British Conservative politician and journalist
Zac Guildford (born 1989), New Zealand rugby union player
Zac Hanson (born 1985), American musician, best known as a member of the pop rock band Hanson
Zac Henderson (1955–2020), American former National Football League and Canadian Football League player
Zac Holtzman, American guitarist and co-founder of the band Dengue Fever
Zac Kerin (born 1991), American National Football League player
Zac Lubin (born 1989), American soccer player
Zac MacMath (born 1991), American soccer player
Zac Morris (born 1978), English former cricketer
Zac Posen (born 1980), American fashion designer
Zac Rinaldo (born 1990), Canadian ice hockey player
Zac Rosscup (born 1988), American Major League Baseball pitcher
Zac Santo (born 1993), Australian rugby league footballer
Zac Smith (born 1990), Australian rules footballer
Zac Sunderland (born 1991), American sailor, first person under the age of 18 to sail solo around the world
Zac Taylor (born 1983), American football coach and former quarterback
Zac Williams (cyclist) (born 1995), New Zealand cyclist
Zac Zorn (born 1947), American former swimmerFictional characters:
Zac MacGuire in the Australian soap opera Home and Away
Zac Smith (Shortland Street) in the New Zealand soap opera Shortland Street
Zac (Battlestar Galactica) in the original Battlestar Galactica TV series
Zac (Shimmer and Shine), in the TV series Shimmer and Shine
Zac, the Secret Weapon, a playable character in multiplayer online battle arena video game League of Legends