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