Family name ยงยุทธ-สุมนา (ยงยุทธ-สุมนา 
) , in the entire world, is an extremely rare surname. Predominantly, ยงยุทธ-สุมนา is the forename as well as the last name. Parts of the name also exists independently as a first name ยงยุทธ, and a first name สุมนา.
| VARIANT | COUNTRY |
|---|---|
| ยงยุทธ-สุมนา | Thailand |