ZS may refer to:
- American Samoa World Meteorological Organization country code
- Azzurra Air IATA airline designator
- MG ZS, a car made by MG Rover
- zettasiemens, an SI unit of electric conductance
- Zombie Squad, a disaster preparedness group
- ZS Associates, a consulting firm
Zs may refer to:
- Zettasecond, a unit of time equal to 1021 seconds
- Zs (band), a musical group from Brooklyn, New York, United States
' zs' may refer to:
- zs, the last (forty-fourth) letter of the Hungarian alphabet, following z
- zeptosecond, a unit of time equal to 10−21 seconds
zS may refer to:
- zeptosiemens, an SI unit of electric conductance