Family name ลัญจกรมงคล (ลัญจกรมงคล 
) , in the world, is a very rare last name. The family name ลัญจกรมงคล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ลัญจกรมงคล | Thailand |
ชํานาญศิลป์, ณัฐวุฒิ, and เสาวรักษ์