Surname Sinhay (Sinhay 
) , all over the world, is a very rare cognomen. The surname Sinhay is habitual in Philippines, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and India. Very seldom, Sinhay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinhay | India, Venezuela, Philippines |