Prince Felix Felixovich Yusupov, Count Sumarokov-Elston (; March 23, 1887, Saint Petersburg, Russian Empire – September 27, 1967, Paris, France), was best known for helping in the murder of Grigori Rasputin. Rasputin was the faith healer who was said to have influenced Tsar Nicholas II and Tsaritsa Alexandra Feodorovna in their decisions. Felix Yusupov was never punished for this murder.