Zack (given name)
Zack, Zach, Zac, Zak, or Zakk are male given names, commonly shortened versions of Zachary. People so named include:
- Zach Boren, American football player
- Zach Braff (born 1975), American actor known for his role in television series Scrubs
- Zac Brown (born 1978) Lead singer in American country music band Zac Brown Band
- Zac Champion (born 1984), American footballer
- Zach Cohen (ice hockey) (born 1987), American ice hockey player
- Zack Conroy (born 1985), American actor
- Zach Day (born 1978), American Major League Baseball player
- Zac Efron (born 1987), American actor
- Zack Esposito (born 1983), American amateur wrestler
- Zac Farro (born 1990), American drummer for Paramore
- Zac Foley (1970–2002), British musician, bass guitarist for EMF
- Zack Fleishman (born 1980), American tennis player
- Zach Galifianakis (born 1969), American comedian
- Zac Goldsmith (born 1975), English environmentalist and politician
- Zack Greinke (born 1983), American Major League Baseball player
- Zac Hanson (born 1985), American musician, drummer for Hanson
- Zach Jackson (born 1983), American Major League Baseball player
- Zak Keith, British guitarist
- Zach Kosnitzky, American participant in Kid Nation
- Zack Martin, American Football Player
- Zack Mettenburger, an NFL Quarterback
- Zach Parise (born 1984), American ice hockey player
- Zac Posen (born 1980), American fashion designer
- Zach Norton (born 1981), American football player
- Zack de la Rocha (born 1970), lead singer of Rage Against the Machine
- Zack Rosen (born 1989), All-American basketball player at Penn; plays for Maccabi Ashdod in Israel
- Zack Shada (born 1992), American actor
- Zack Snyder (born 1966), American film director and screenwriter
- Zak Starkey (born 1965), English drummer for The Who and Oasis
- Zack Test (born 1989), American rugby union player
- Zack Werner, Canadian artist, producer, lawyer and manager in the music industry
- Zack Wheat (1888–1972), American Major League Baseball player
- Zach Whitmarsh (born 1977), Canadian track and field athlete
- Zakk Wylde (born 1967), guitarist for Ozzy Osbourne and founder of Black Label Society
- Zach Weiner (born 1982), American webcomic author of Saturday Morning Breakfast Cereal
Fictional characters include:
- Zack Addy, in the television series Bones
- Zack Allan, in the television series Babylon 5
- Zak Dingle, in the British soap opera Emmerdale
- Zack Mooneyham, a character in School of Rock
- Zack Fair, in the role-playing game Final Fantasy VII and its spin-offs
- Zack Johnson, in The Big Bang Theory
- Zakk Irius, mafia member in the anime and manga series Death Note
- Zack Lane, in the novel Zack by William Bell
- Zack Martin, in the television series The Suite Life of Zack and Cody
- Zak McKracken, hero of the adventure game Zak McKracken and the Alien Mindbenders
- Zack Morris, in television series Saved by the Bell
- Zach Nichols, in the American police procedural television drama Law & Order: Criminal Intent
- Zak Saturday, one of the main characters in the cartoon series The Secret Saturdays
- Zach Stevens, in The O.C.
- Zack Taylor, in the television series Mighty Morphin Power Rangers
- Zack (Battlestar Galactica)
- Zack, in the computer game The Daedalus Encounter
- Zack (Dead or Alive), in the video game series Dead or Alive
- Zak (TUGS), in the television series TUGS
- Zack, one of the titular characters in the video game Zack & Wiki: Quest for Barbaros' Treasure
- Zack, Kamen Rider Knuckle in Kamen Rider Gaim