Family name Rathugamage (Rathugamage 
) , globally, is a rare surname. The surname Rathugamage is habitual in Sri Lanka, where it is quite a rare surname, Italy, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Much less frequently, Rathugamage is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rathugamage | South Africa, Italy, United Kingdom, United States, Sri Lanka |