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