Big Z may refer to:

People Carlos Zambrano (born 1981), Venezuelan baseball pitcher in Major League Baseball Nikita Zadorov (born 1995), Russian ice hockey defenseman Zach Zenner (born 1991), former NFL running back, most known for his time with the Detroit Lions Zbigniew Brzezinski (1928–2017), Polish-American political scientist Zdeno Chára (born 1977), Slovak ice hockey player Zelmo Beaty (1939–2013), basketball player in the National Basketball Association and American Basketball Association Zvonimir Ivišić (born 2003), Bosnian-born Croatian basketball player Zydrunas Ilgauskas (born 1975), Lithuanian basketball player in the National Basketball Association Žydrūnas Savickas (born 1975), Lithuanian strongman

Fictional characters Zangief, a character from the Street Fighter Series Zaphod Beeblebrox, fictional President of the Universe from the Hitchhiker's Guide Zapp Brannigan, fictional starship captain from Futurama Zeke "Big Z" Topanga, a fictional penguin from the 2007 film, Surf's Up