Cognomen ลาซิส (Lacis 
, ลาซิส 
) , worldwide, is quite a rare family name. The cognomen ลาซิส is habitual in Northern Europe, particularly Latvia, where it is quite a common surname, Lithuania, where it is quite a rare surname, and Estonia, where it is a rare surname. In absolute terms, this name is the most popular in Latvia, the United States, and Australia. Much less frequently, ลาซิส is the forename as well as the last name.