Heinrich Alexander Ludwig Peter Prinz zu Sayn-Wittgenstein (14 August 1916 – 21 January 1944) was a German of aristocratic descent and a Luftwaffe night fighter flying ace during World War II. A flying ace or fighter ace is a military aviator credited with shooting down five or more enemy aircraft during aerial combat. At the time of his death, he was the highest scoring night fighter pilot in the Luftwaffe and still the third highest by the end of World War II, with 83 aerial victories to his credit.