Throughout the world, Phadej (Phadej 
) is an extremely rare male first name. Very seldom, Phadej is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phadej | United States, India, Thailand |
| phadej rojanasakul Ph.D. University of Wisconsin-Milwaukee 1984 |
|
Simsa, Somsri, Amnukhamani, Toekaew, Suebsor, Boonlon, Laoraiem, Noiruang, Ngamsak, Onlahoong, Phiwngam, Chindakham, and Phanitchati