Last name Sinnaga (Sinnaga 
) , globally, is a very rare surname. The cognomen Sinnaga is characteristic of South-eastern Asia, particularly Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Very seldom, Sinnaga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinnaga | India, Malaysia, Indonesia |