Yulia Alexandrovna von Dehn (Russian: Юлия Александровна фон Ден; August 9 [O.S. July 27] 1888 – October 8, 1963), known as Lili Dehn, or Lili von Dehn, was the wife of a Russian naval officer and a friend to the Empress Alexandra. Following the Russian Revolution of 1917, Dehn wrote a biography, The Real Tsaritsa, to refute rumors that were circulating in Europe during the 1920s about the Empress and Grigori Rasputin.