Ernst-Felix Krüder (6 December 1897 – 8 May 1941) was a Captain (German: Kapitän zur See) of the German Navy (Kriegsmarine) who, during World War II, commanded a merchant raider. He was also a recipient of the Knight's Cross of the Iron Cross with Oak Leaves (). The Knight's Cross of the Iron Cross and its higher grade Oak Leaves was awarded to recognise extreme battlefield bravery or successful military leadership.