Family name 亘鑫 (亘鑫 
) , across the world, is a very rare cognomen. The surname 亘鑫 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 亘鑫 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 亘鑫 | China |