Last name สุมาลย์เจริญ (สุมาลย์เจริญ 
) , in the world, is an extremely rare family name. The family name สุมาลย์เจริญ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สุมาลย์เจริญ | Thailand |