Cognomen Sugunarajah (Sugunarajah 
) , around the world, is an extremely rare last name. The surname Sugunarajah is habitual in Northern Europe, particularly the United Kingdom, where it is an extremely rare surname. More prevalently, Sugunarajah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sugunarajah | Malaysia, United Kingdom, Australia |