Surname Prematilaka (Prematilaka 
) , worldwide, is a rare family name. The family name Prematilaka is habitual in Sri Lanka, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prematilaka | Malaysia, Canada, India, Sri Lanka |
| prematilaka mapitigama Sri Lankan civil servant, author and a publisher, LK (b. 1930) |
|