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