In the world, Khammouan (Khammouan 
) is an extremely rare dominantly male, but infrequently female given name.
| VARIANT | COUNTRY |
|---|---|
| Khammouan | United States, Laos |
Wong, Sayahod, Malavong, Siharath, Khounoudom, Louangbanthao, Bouaphanh, Keosavang, Keodouangdy, Phimvongsa, Vongphosy, Saisongkham, Chanthilath, Khantikone, and Khamphoumy