Prince Felix Felixovich Yusupov, Count Sumarokov-Elston (Russian: Князь Фе́ликс Фе́ликсович Юсу́пов, Граф Сумаро́ков-Эльстон; 23 March [O.S. 11 March] 1887 – 27 September 1967) was a Russian aristocrat, prince and count from the Yusupov family. He is best known for participating in the assassination of Grigori Rasputin and marrying the niece of Czar Nicholas II.
