Ivan III
Tsar Nicholas II, The Last Ruler of the Russian Empire
Tsar Alexander 1
The title of the Russian emperor is "Tsar" or "Emperor," while his wife holds the title of "Tsarina" or "Empress." These titles were historically used during the time of the Russian monarchy, which lasted until the abdication of Tsar Nicholas II in 1917. The Tsar was the sovereign ruler of Russia, while the Tsarina often played a significant role in the court and state affairs.
Tsar Nicholas Romanov II
Russian rulers have had many and varied titles since Rurik established the Russian state. Grand Duke or Grand Prince were both common titles. Ivan III (the Great) was the first to use the title Tsar (Tzar, Csar or Czar), a Russification of the Roman word Caesar. By the time the Romanovs had come to power, it was the standard title applied to all Russian rulers.
tsar
A Russian ruler was called a Tsar or Czar, depending on your preferred spelling.
The word "czar" is a term for a leader, most often of a country. It is similar to the Russian term "tsar," which was the king and head ruler of the country.
Tsar Peter the Great
Tsar Nicholas II, The Last Ruler of the Russian Empire
The first person to adopt the title Tsar was Simeon I of Bulgaria, in 893-900, but the first Russian Tsar was Ivan IV from 1547
Tsar Simeon I
Tsar Simeon
Tsar Alexander I
Tsar Nicholas Romanov II was the Russian ruler in 1906 and continued as such until he abdicated the throne in March 1917.
Tsar Alexander 1
Tsar is the Russian term for the equivalent of an emperor. They are considered emperors/an imperial family because that is what they are.