Surname Gunatileka (Gunatileka 
) , in the entire world, is a very rare family name. The cognomen Gunatileka is characteristic of Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Gunatileka | United States |
| sameera gunatileka badminton player, US (b. 1984) |
|