Cognomen Chanthavy (Chanthavy 
) , in all the world, is a rare last name. The surname Chanthavy is habitual in Laos, where it is quite a rare surname, Cambodia, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Chanthavy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chanthavy | Australia, Canada, Thailand, Laos, United States |