Surname Thirunilathil (Thirunilathil 
) , globally, is a very rare last name. The family name Thirunilathil is characteristic of Southern Asia, particularly India, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thirunilathil | India |
Suma, Servin, Rajesh, Mrudula, Raveendran, and Ramachandran