Surname ปิ่นใจ (Pinjai 
, ปิ่นใจ) , in the entire world, is a rare last name. The cognomen ปิ่นใจ is habitual in Thailand, where it is quite a rare surname, India, where it is an extremely rare surname, and the United States. Very seldom, ปิ่นใจ is the forename as well as the last name.