Class 79 or 79 class may refer to:
DRG Class 79, a German tank locomotive class with the pre-war Deutsche Reichsbahn and the post-war East German Deutsche Reichsbahn, comprising: Class 79.0: Saxon XV HTV (1925–1933) Class 79.0II: BLE No. 44 (1938–1947) Class 79.0III: SNCF 1–242.TA.6xx, ex-Alsace-Lorraine T 20 taken over by the DR (1952–1963) New South Wales 79 class locomotive, diesel-electric locomotives