Surname رجائى (رجائى 
) , in the world, is quite a rare cognomen. The family name رجائى is habitual in Northern Africa, particularly Egypt, where it is quite a rare surname. Likewise, رجائى is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| رجائى | Egypt, Jordan, Yemen |
| جيهان رجائى Egyptian chemist, EG (b. 1944) |
|