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