SM U-47 was a Type U-43 submarine of the Imperial German Navy (Kaiserliche Marine.).

She engaged in commerce raiding during the First World War.

Her captain between 14 January and 14 June 1918 was Wilhelm Canaris.

She carried out two war patrols and succeeded in sinking 14 ships for a total of 23,932 gross register tons (GRT).

Engine troubles meant she could not be used from June 1918, and was finally scuttled at Pula on 28 October 1918 during the evacuation.