Anna Vasilchikova (Анна Васильчикова) was Tsaritsa of the Tsardom of Russia and was the fifth wife of Ivan the Terrible. Very little is known of her background. She married Ivan in January 1575 without the blessing of the Ecclesiastical Council of the Russian Orthodox Church. She was repudiated by her husband and made a nun in a monastery. The date of her death is uncertain, having been variously described as occurring in 1576–77. There are beliefs that she met a violent death. Most likely she was tortured by orders from her husband.