ZS, Zs, zS, or zs may refer to: Businesses and organizations Azzurra Air (IATA airline designator ZS) Zombie Squad, a disaster preparedness group ZS Associates, a consulting firm Greens of Serbia (Zeleni Srbije), a political party in Serbia Healthy Serbia (Zdrava Srbija), a political party in Serbia Places American Samoa (World Meteorological Organization country code ZS) Szczecin, a city in Poland identified by the vehicle registration code ZS Science and technology Zeptosecond, a unit of time equal to 10−21 seconds Zeptosiemens, an SI unit of electric conductance Zettasiemens, an SI unit of electric conductance Zettasecond, a unit of time equal to 1021 seconds Zs, the category for "Separator, Space" characters in the Unicode standard Other uses Zs (band), a musical group from Brooklyn, New York, United States Hungarian zs, the last (forty-fourth) letter of the Hungarian alphabet, following z MG ZS, a car made by MG Rover See also Sz (disambiguation)