Cognomen เล็กสุทธิเจริญ (เล็กสุทธิเจริญ 
) , around the globe, is an extremely rare family name. The surname เล็กสุทธิเจริญ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| เล็กสุทธิเจริญ | Thailand |