Friedrich Guggenberger (6 March 1915 – 13 May 1988) was a German admiral, who in his earlier career was a U-boat commander in the Second World War. From November 1940 until his capture in July 1943, he was credited with sinking 17 ships for a total of 66,848 gross register tons (GRT) and damaging another for 6,003 GRT. He sank the British aircraft carrier HMS Ark Royal in November 1941. For these achievements he received the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany. After the war he became the Deputy Chief of Staff in the NATO command Allied Forces Northern Europe.