Cognomen Imaduwa (Imaduwa 
) , worldwide, is a rare family name. The family name Imaduwa is habitual in Sri Lanka, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Australia, where it is a very rare surname. Much less frequently, Imaduwa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Imaduwa | Australia, United Arab Emirates, New Zealand, Sri Lanka |