Surname Lannui (Lannui 
) , in the entire world, is an extremely rare family name. The last name Lannui is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Lannui is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lannui | Thailand |
Rewut, Pairat, and Natthaphon