[OKSooner]

Uh, what’s the feminine of Czar?

Czarova? Czaress? Czarina?

Just axin.

[ichabod1]

Czarina I believe.

[bravo whiskey]

Czar is Polish origin. There is a czarina but we never use it for a female government czar. I use and prefer tsar and tsarina as this is the romanticized spelling of the Cyrillic word.
The things you learn when teaching a class on The Great Patriotic War and now preparing a class on the Russian Revolution, Russian Civil War and Russo-Polish War 1920.