S class
- Class S (disambiguation)
- Mercedes-Benz S-Class
- S-Class (song)
- S-Type (disambiguation)
- S-class Melbourne tram
- S-class destroyer (disambiguation)
- S-class ferry
- S-class submarine (disambiguation)
- S-class torpedo boat
- S-segment
- South Australian Railways S class
- Type S (disambiguation)
- Victorian Railways S class
- Victorian Railways S class (diesel)
- WAGR S class