Cognomen Inthanam (Inthanam 
) , worldwide, is a rare family name. The last name Inthanam is characteristic of Laos, where it is quite a rare surname, Austria, where it is a rare surname, and Thailand.
| VARIANT | COUNTRY |
|---|---|
| Inthanam | Thailand, United States, Austria, Laos |
La, Chansouk, Premyuda, Phakarat, Ratchada, Nattakan, Yongyuth, Xaysavat, Saynarone, Praiphana, Priyaphon, Thanaporn, Neeranute, Vilaivanh, Sathaphone, Pranchalee, Sisavath, Sayarath, Xaysana, Thaksin, Mala, Ariya, David, Anuwat, Adisak, Chonny, Buppha, Saranratcharin, Thawin, Maliwan, Saranya, Saynary, Aimmika, Chanscuk, Kingkan, Kissada, Noukeo, and Chananthida