S class

S class or Class S may refer to:

Astronomy

• Class S, a stellar classification for carbon stars

Automobiles

• Mercedes-Benz S-Class automobile

Fiction

• Class S (genre) is a genre of fiction about girls' relationships, popular in Japan

Locomotives

• Baltimore and Ohio Class S, and American 2-10-2 "Santa Fe" type steam locomotive
• Victorian Railways S class, steam locomotive
• Victorian Railways S class (diesel), diesel locomotive
• South Australian Railways S class, a broad gauge locomotive built by James Martin & Co
• WAGR S class
• BNCR Class S, Irish narrow gauge steam locomotive
• GNRI Class S, Irish steam locomotive
• South African Class S 0-8-0

Ships

• S-class destroyer (disambiguation) multiple types of ships
• S-class submarine (disambiguation), multiple types of submarines
• S-class ferry, operated by BC Ferries in British Columbia, Canada.
• S-class torpedo boat, ex-Russian torpedo boats operated by Finland
• Statendam-class cruise ship, a class of the Holland America Line