C-class submarine

C-class submarine may refer to:


 * British C-class submarine, the last class of petrol engined submarines of the Royal Navy
 * United States C-class submarine, five boats built for the United States Navy
 * Japanese Type C 1st class submarine, two classes submarines:
 * Type C submarine
 * I-52-class submarine (Type C3 submarine)
 * Japanese Type C 3rd class submarine, three classes submarines:
 * Ha-1-class submarine (Type C1 submarine)
 * Ha-3-class submarine (Type C2 submarine)
 * Ha-7-class submarine (Type C3 submarine)