Cognomen Sayanan (Sayanan 
) , in the world, is a rare family name. The last name Sayanan is habitual in Philippines, where it is a rare surname, Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Also, Sayanan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayanan | India, United States, Thailand, Philippines |