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