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