Type C3 submarine

Type C3 submarine may refer to:

• {{sclass|I-52|submarine|1}}, also called Type C3 submarine or Type C Modified submarine (Junsen Hei-gata-kai), the first class submarine of the Imperial Japanese Navy
• {{sclass|Ha-7|submarine|1}}, also called Type C3 submarine (C3-gata), the third class submarine of the Imperial Japanese Navy