There are 5 artists using this name:

Big Z (real name Zach Caraher) is a Philadelphian producer/DJ, best known for his hits "Little Voices" and "Fool For You".

Big Z (real name Zachary Booth) is an american hip-hop artist best known for his lyrical works over obscure instrumentation. He has released 1 album and 3 EPs under this current (as of 2013) pseudonym.

Big Z (a.k.a BigZam) is a japanese hip-hop artist. He's best known as part of the super crew Nitro Microphone Underground. After two discs with his posse, he released his first full length solo album in 2005 titled "Westside Far Eastside".

http://www.myspace.com/bigzjpn

Big Z(UK) are a Scottish rock band.
Hailing from Glasgow, Scotland, vocalist Andy Graham and guitarist Stephen Watson recruited drummer Bob McBride and later bassist Danny Kerr to solidify the lineup of Big Z in late 2010. With a roster of songs fueled by a passion for curry and a few with a strange obsession with vintage aviation the band began looking for gigs at he start of 2011


There's also another musical project under the name "Big Z": a noise one-man-band from Zoran Pšeničnik, the drummer from the doom metal band S.o.M.. Big Z has one album, released in 2008, called "Sebway Mistral".
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