The meaning of the Acronym GZ is...

GZ is

• Grats! (Congratulations)

More Meanings For GZ:

• Compressed file archive (GNU Zip)
• Gnu Zip
• Grats! (Congratulations)
• Gamer Z
• Gar Zeng
• Ground Zero
• General Zhaoyun
• Ghetto Z
• Goodyear Zeppelin

GZ is also in:

• Chat
• File Extensions
• Firms
• Software
• Unfiled