W class may refer to:
W-class Melbourne tram, a family of electric trams W-class destroyer (disambiguation), several classes of ships Silverton Tramway W class, 4-8-2 steam locomotives South Australian Railways W class, 2-6-0 steam locomotives Victorian Railways W class, diesel-hydraulic shunting locomotives WAGR W class, Western Australian steam locomotives A code used by some airlines for premium economy
See also Class W