Surname Suplina (Suplina 
, Суплина 
) , throughout the world, is a rare last name. The surname Suplina is characteristic of Croatia, where it is a rare surname, Italy, where it is a very rare surname, and Kyrgyzstan. In absolute terms, it most frequently occurs in Italy, Russia, and Croatia. Much less frequently, Suplina is the forename as well as the last name.