Sz

SZ, Sz, sz is used as an abbreviation for:

Places
 Canton of Schwyz
 Shenzhen, simplify into SZ, a city in Guangdong province, China
 Eswatini (ISO 3166-1 country code)
 .sz, the country code top level domain (ccTLD) for Eswatini
 Switzerland (NATO country code)

Cars
 Alfa Romeo SZ, a car
 Rolls-Royce SZ and Bentley SZ, a series of different cars produced from 1980 to 2003 by Rolls-Royce Motors and Bentley Motors
 SZ cycle-car, a Soviet/Russian microcar series including SZA and SZD

Newspapers
 Saarbrücker Zeitung, a German newspaper, based in Saarland
 Süddeutsche Zeitung, a German newspaper, published in Munich

Other uses
 ß, a letter in some languages, which is sometimes written as sz