In the world, 珂贞 (珂贞 
) is a very rare unisex given name. The forename 珂贞 is characteristic of Eastern Asia, particularly China, where it is an extremely rare epicene name. Very seldom, 珂贞 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 珂贞 | China |