Family name Sihaya (Sihaya 
) , in the entire world, is a very rare cognomen. The surname Sihaya is habitual in Malaysia, where it is a very rare surname, Indonesia, and Nigeria, where it is an extremely rare surname. Also, Sihaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sihaya | Malaysia, Nigeria, Indonesia, India, United States |