Last name Sandoyan (Sandoyan 
) , all over the world, is a very rare cognomen. The family name Sandoyan is habitual in Armenia, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Sandoyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sandoyan | Armenia, United States, Philippines |