Zzzz

ZZZZ or zzzz may refer to:

• Zzzz, a cross-linguistic onomatopoeia for snoring
• A series of Zs in a speech balloon, a comic book convention for snoring
• ZZZZ, the four-letter placeholder ICAO airport code
• Zzzz, the ISO 15924 code for uncoded script
• ZZZZ, a mid-2000s rock band including former members of the band Sweep the Leg Johnny
• "Zzzz", a silent track on the 2014 album Sleepify by Vulfpeck
• "ZzZz", a song on the 2019 studio album Reality in Black by Mamamoo
• "ZzZz", a song on the 2021 EP Hide & Seek by Purple Kiss