German submarine U-156

Unterseeboot 156 or U-156 has been the name of two German submarines or U-boats during the First World War and the Second World War.

Unterseeboot 156 (1917) was a merchant submarine built in 1916 and commissioned for war service in 1917 in the First World War, and sunk in 1918.

Unterseeboot 156 (1941) was a submarine built in 1941, and sunk in 1943.

This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.