Last name สุมเล็ก (สุมเล็ก 
) , in the entire world, is a very rare surname. The surname สุมเล็ก is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, สุมเล็ก is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุมเล็ก | Thailand |