Cognomen 坦晶 (坦晶 
) , in the entire world, is a very rare family name. The cognomen 坦晶 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 坦晶 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 坦晶 | China |