Family name Sinjay (Sinjay 
) , around the world, is a rare surname. The surname Sinjay is habitual in Indonesia, where it is a very rare surname, and India, where it is an extremely rare surname. Likewise, Sinjay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinjay | Philippines, India, United States, Indonesia, South Africa |