Cognomen 祚鑫 (祚鑫 
) , all around the world, is a very rare surname. The family name 祚鑫 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 祚鑫 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 祚鑫 | China |