Surname Smartin (Samartin 
, Smartin 
) , all around the world, is a rare last name. The family name Smartin is habitual in Latin America and the Caribbean, particularly Uruguay, where it is a rare surname, Argentina, and Brazil, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Brazil, Argentina, and Mexico. Very seldom, Smartin is the forename as well as the last name.