In the world, 尔丹 (尔丹 
, Erdan 
) is quite a rare unisex given name. The given name 尔丹 is habitual in Montenegro, where it is quite a common boy's name, Turkey, where it is a rare primarily male, but very infrequently girly name, and Philippines, where it is a very rare masculine name. Measured by absolute frequency, it is commonest in China, Turkey, and Philippines. Also, 尔丹 is the last name as well as the forename.