Cognomen Kokaina (Coca 
, Kokaina 
) , in the entire world, is a common surname. The last name Kokaina is characteristic of Bolivia, where it is quite a common surname, Romania, and El Salvador (explore the name in all countries). Not in comparison with a country's population, the name is most common in Bolivia, India, and Romania. Very seldom, Kokaina is the forename as well as the last name.