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