Family name แสงวิชัย (แสงวิชัย 
, Saengvichai , Sangwichai ) , all around the world, is a rare last name. The cognomen แสงวิชัย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, แสงวิชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sangwichai, แสงวิชัย, Saengvichai, Sangvichai | Thailand |