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