Last name ทุน (Thun 
, ทุน , Grants 
) , in the world, is a common family name. The last name ทุน is characteristic of Latvia, where it is quite a common surname, Myanmar, and Norway, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Myanmar, Germany, and Malaysia. Also, ทุน is the forename as well as the last name.