SMS Cöln has been the name of two ships of the German Imperial Navy:
, a light cruiser sunk at the Battle of Heligoland Bight. , a light cruiser, the lead ship of her class, the last class of light cruisers of the German Imperial Navy.
The Reichsmarine and Kriegsmarine had a ship in service, . The Bundesmarine also has a ship currently in service, Köln.