SMS ''Cöln'' has been the name of two ships of the Kaiserliche Marine, German Imperial Navy:
* , a light cruiser sunk at the Battle of Heligoland (1914), Battle of Heligoland Bight.
* , a light cruiser, the lead ship of Cöln-class cruiser, 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, Bremen-class frigate, ''Köln''.
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German Navy ship names