Surname Koonamthuruthil Soman (Koonamthuruthil Soman 
) , in the world, is a very rare family name. The last name Koonamthuruthil Soman is habitual in South-eastern Asia, particularly Singapore, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Koonamthuruthil Soman | Singapore |