Family name วโรตนม์ (วโรตนม์ 
) , all over the world, is an extremely rare last name. The cognomen วโรตนม์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, วโรตนม์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วโรตนม์ | Thailand |
ภูธา, ยอนหนองคา, and เจือรัตนศิริกุล