Günther-Hubertus Freiherr von Reibnitz (8 September 1894 – 2 March 1983) was a German nobleman and a cavalry officer in the German army during the First World War. He joined the Nazi Party in 1930 and was a member of the SS Cavalry Corps.

Reibnitz married four times and was the father of Princess Michael of Kent. Two of his grandchildren, Lord Frederick Windsor and Lady Gabriella Windsor, are in the line of succession to the British throne. They are also great-grandchildren of King George V.