Surname Milanthi (Milanthi 
) , around the globe, is an extremely rare family name. Much more frequently, Milanthi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Milanthi | United States, New Zealand, Sri Lanka |
Perera, Nilanthi, Widanegamage, Welamedage, Sarukkali, Wanasinghe, Wijesiriwardena, and Hewapathirana