"Ivan Iv Vasilievich" is the name of a popular Russian comedy play and movie. Some synonyms for this title include "Ivan the Terrible," "Ivan the Fourth," and "Ivan Vasilievich." These names all refer to the historical figure of Ivan IV of Russia, who ruled during the 16th century. "Ivan the Terrible" is perhaps the most well-known nickname for this ruler, but it is not his official title. "Ivan the Fourth" is a more accurate description of his place in the line of Russian monarchs, while "Ivan Vasilievich" simply refers to his given name and patronymic. Regardless of which name is used, Ivan IV remains a fascinating and controversial figure in Russian history.