1Z may refer to:
Helicopters
edit- AH-1Z; see H-1 upgrade program, US military helicopter program
- Bell AH-1Z Viper
- AH-1Z Super Cobra; see Bell AH-1 SuperCobra
Other
edit- SSH 1Z (WA); see List of former state highways in Washington
- A prefix for tracking numbers used by United Parcel Service