>
Surname Kosin (โกสินทร์ , Kosin , โกสินธ์ ) , in all the world, is quite a rare cognomen. The last name Kosin is habitual in Slovenia, where it is quite a rare surname, Thailand, and Bulgaria. Not in comparison with a country's population, it is the most numerous in Thailand, Germany, and the United States. More frequently, Kosin is the forename as well as the last name.