Surname ล้วนมงคล (ล้วนมงคล, Luanmongkhon 
) , in the world, is a very rare cognomen. The family name ล้วนมงคล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Luanmongkhon | Thailand |