Family name バルカス (Balcus 
, バルカス) , in the world, is a very rare cognomen. The surname バルカス is habitual in Northern Europe, particularly Latvia, where it is quite a rare surname, Estonia, where it is a rare surname, and Norway, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Latvia, Philippines, and Estonia. Much less frequently, バルカス is the forename as well as the last name.