Family name Lavanh (Lavanh 
) , in all the world, is quite a rare cognomen. The last name Lavanh is habitual in Laos, where it is quite a common surname, Italy, where it is an extremely rare surname, and the United States. Also, Lavanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lavanh | Canada, Thailand, Italy, Laos, United States |