Last name 颐贞 (颐贞 
) , in the entire world, is a very rare family name. The last name 颐贞 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 颐贞 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 颐贞 | China |