Russia
The title tsar was used once by church officials of Kievan Rus' in the naming of Yaroslav the Wise, the grand prince of Kiev (r. 1019–1054). This may have related to Yaroslav's war against Byzantium and to his efforts to distance himself from Constantinople. However, other princes during the period of Kievan Rus' never styled themselves as tsars. The first Russian ruler to openly break with the khan of the Golden Horde, Mikhail of Tver (r. 1285–1318), assumed the title basileus ton Ros,
as well as tsar. The title of tsar was used to denote a fullness of a sovereign's power and was reserved to the Holy Roman emperor and the Byzantine emperor, and later the khan of the Golden Horde. In literature, it was also used in a wider sense to indicate an illustrious ruler. Unlike its usage in Bulgarian and Serbian, where the title of tsar was used to challenge the power of the basileus, it only had a religious or moral value when attributed to a Russian prince throughout most of the medieval period.
The grand princes of Moscow began using the title in foreign relations. Following his assertion of independence from the khan in 1476, Ivan III (r. 1462–1505) adopted the title of sovereign of all Russia, and he later also started to use the title of tsar regularly in diplomatic relations with the West. From about 1480, he is designated as imperator in his Latin correspondence, as keyser in his correspondence with the Swedish regent, and as kejser in his correspondence with the Danish king, Teutonic Knights, and the Hanseatic League. Ivan's son Vasily III continued using these titles. Sigismund von Herberstein (1486–1566) observed that the titles of kaiser and imperator were attempts to render the Russian term tsar into German and Latin, respectively. The title-inflation related to Russia's growing ambitions to become an Orthodox "third Rome", after the fall of Constantinople in 1453. The monarch in Moscow was recognized as an emperor by Holy Roman Emperor Maximilian I in 1514.
However, the first Russian ruler to be formally crowned as tsar of all Russia was Ivan IV ("the Terrible"), in 1547. Some foreign ambassadors—namely, Herberstein (in 1516 and 1525), Daniel Printz a Buchau (in 1576 and 1578) and Just Juel (in 1709)—indicated that the word "tsar" should not be translated as "emperor", because it is applied by Russians to David, Solomon and other Biblical kings, who are simple reges. On the other hand, Jacques Margeret, a bodyguard of False Demetrius I (r. 1605–1606), argues that the title of "tsar" is more honorable for Muscovites than "kaiser" or "king" exactly because it was God and not some earthly potentate who ordained to apply it to David, Solomon, and other kings of Israel. Samuel Collins, a court physician to Tsar Alexis in 1659–66, styled the latter "Great Emperor", commenting that "as for the word Czar, it has so near relation to Cesar... that it may well be granted to signifie Emperour. The Russians would have in to be an higher Title than King, and yet they call David Czar, and our kings, Kirrols, probably from Carolus Quintus, whose history they have among them".
The title tsar remained in common usage, and also officially as part of various titles signifying rule over various states absorbed by the Russian monarchy (such as the former Tatar khanates and the Georgian Orthodox kingdom). In the 18th century, tsar was increasingly viewed as inferior to "emperor" or as highlighting the oriental side of the rank. Upon annexing Crimea in 1783, Catherine the Great adopted the hellenicized title "tsaritsa of Tauric Chersonesos", rather than "tsaritsa of the Crimea". By 1815, when Russia annexed a large part of Poland, the title had clearly come to be interpreted in Russia as the equivalent of Polish król ("king"), and the Russian emperor assumed the title "tsar of Poland".
Among the indigenous peoples of Siberia and the Muslims of the Volga region, Central Asia and the Caucasus, the autocracy of the Russian Empire often became identified with the image of the "White Tsar" (Russian: Белый царь).
By 1894, when Nicholas II ascended the throne, the full title of the Russian rulers was "By the grace of God Almighty, the Emperor and Supreme Autocrat of all the Russias, Tsar of Moscow, Kiev, Vladimir, Novgorod, Kazan, Astrakhan, Poland, Siberia, Tauric Chersonese, and Georgia, Lord of Pskov, Grand Duke of Smolensk, Lithuania, Volhynia, Podolia and Finland, Prince of Estonia, Livonia, Courland and Semigalia, Samogitia, Białystok, Karelia, Tver, Yugra, Perm, Vyatka, Bulgaria, and other territories; Lord and Grand Duke of Nizhny Novgorod, Chernigov; Ruler of Ryazan, Polotsk, Rostov, Yaroslavl, Beloozero, Udoria, Obdoria, Kondia, Vitebsk, Mstislav, and all northern territories; Ruler of Iveria, Kartalinia, and the Kabardinian lands and Armenian territories; hereditary Ruler and Lord of the Cherkess and Mountain Princes and others; Lord of Turkestan, Heir of Norway, Duke of Schleswig-Holstein, Stormarn, Dithmarschen, Oldenburg".