Both ways are mentioned on Wikipedia https://en.m.wikipedia.org/wiki/Tsarina https://en.m.wikipedia.org/wiki/Tsarina but Tsarina is clearly more common https://

Both ways are mentioned on Wikipedia https://en.m.wikipedia.org/wiki/Tsarina https://en.m.wikipedia.org/wiki/Tsarina but Tsarina is clearly more common https://trends.google.com/trends/explore?geo=US&q=Tsarina,Tsaritsa https://trends.google.com/trends/explore?geo=US&q=Tsarina,Ts.... Mine's true to the original, it's the same letter that's Anglicised as "ts" in the beginning, Ц. English also has "Empress" ("императрица" is what they were called formally) and it would be derogatory to call her King Elizabeth.