SZ, Sz, sZ, or sz may refer to:

Businesses and organizations

• Slovenske železnice (SŽ), a Slovenian railway company
• Green Party (Czech Republic) (Czech: Strana zelených)
• Air Southwest (IATA code)

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)

Products

• 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
• SZ, a model from Sony's range of VAIO computers
• Sprite Zero, a diet soft drink

Publications

• Saarbrücker Zeitung, a German newspaper, based in Saarland
• Süddeutsche Zeitung, a German newspaper, published in Munich
• Szőllősy index, catalogue (Sz) of all the compositions of Béla Bartók
• S/Z, an essay by Roland Barthes, published as a book in 1970

Science and technology

• Shenzhou (spacecraft), the Chinese space capsule
• Sunyaev–Zel'dovich effect, in astrophysics
• Suzuki groups, a family of mathematical groups
• Suzuki sporadic group, a mathematical group

Other uses

• Sz (digraph), a digraph used in Hungarian, Polish, Kashubian, German, and Cantonese romanization
• Sky Zone
• Sami Zayn, Canadian professional wrestler

See also

• ß
• ZS (disambiguation)