Carl Emmermann was a German U-boat commander during World War II. In his time as commander, submarines under his command sank 27 ships for a total tonnage of 152,080 gross register tons (GRT).

German submarine U-172 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II. She was first assigned to the 4th U-boat Flotilla for training and on 1 May 1942 was reassigned to the 10th flotilla, an operational long-range organization.