Cognomen ลาภรัตนกุล (ลาภรัตนกุล 
, Larpratanakul ) , in the entire world, is a very rare last name. The surname ลาภรัตนกุล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
อรสา, ชัยชนะ, บุญรอด, and ณรงค์ศักดิ์