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