Last name 特伦 (特伦 
, Troen 
) , in the world, is a rare surname. The cognomen 特伦 is characteristic of Denmark, where it is quite a rare surname, Norway, and Switzerland, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Denmark, the United States, and Norway. Likewise, 特伦 is the forename as well as the last name.