Cognomen Leontin (Leontin 
, Леонтин 
) , in the entire world, is quite a rare last name. The last name Leontin is characteristic of Romania, where it is quite a rare surname, Norway, where it is a very rare surname, and Indonesia. Not in comparison with a country's population, this name is the most popular in Romania, Indonesia, and Italy. More frequently, Leontin is the forename as well as the last name.