S class may refer to:
Automobiles Mercedes-Benz S-Class, an automobile S-segment, a European vehicle size class
Rail transport NBR S class, British steam locomotives Victorian Railways S class, Australian steam locomotives Victorian Railways S class (diesel), Australian diesel locomotives South Australian Railways S class, steam locomotives WAGR S class, Australian steam locomotives WAGR S class (1888), Australian steam locomotives Westrail S class, Australian diesel locomotives S-class Melbourne tram
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 , a class of the Holland America Line
Other uses "S-Class" (song), a 2023 song by Stray Kids
See also Class S (disambiguation) S-Type (disambiguation) Type S (disambiguation)