Cognomen Sinaka (Sinaka 
) , in the world, is a very rare family name. The cognomen Sinaka is habitual in Thailand, where it is a very rare surname, Philippines, where it is an extremely rare surname, and the United States. Measured by absolute frequency, it is commonest in Thailand, the United States, and India. More prevalently, Sinaka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinaka | South Africa, Malaysia, Thailand, United States, India |