Surname Malwattage (Malwattage 
) , in the world, is a rare family name. The last name Malwattage is habitual in Sri Lanka, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Malwattage is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Malwattage | United States, Sri Lanka, United Kingdom |