Last name Petriks (Petriks 
) , in the world, is a very rare cognomen. The family name Petriks is habitual in Northern Europe, particularly Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and Finland, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Latvia, Lithuania, and Brazil. Much less frequently, Petriks is the forename as well as the last name.