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