Cognomen Launjaiboontham (Launjaiboontham 
) , throughout the world, is a very rare family name. The cognomen Launjaiboontham is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Launjaiboontham | Thailand |
Apichit, Amonthep, and Natthaphum