Cognomen Tsar (Caesar 
, Tsar 
, Sár 
) , all around the world, is a common last name. The family name Tsar is characteristic of Latin America and the Caribbean, particularly Saint Vincent and the Grenadines, where it is a common surname, Saint Kitts and Nevis, where it is quite a common surname, and Trinidad and Tobago (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Indonesia, the United States, and Ghana. Also, Tsar is the forename as well as the last name.