Family name แสงเพชรไพโรจน์ (แสงเพชรไพโรจน์ 
, Saengpetpirote , Saengpetchpairote ) , all around the world, is a very rare cognomen. The surname แสงเพชรไพโรจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sangpetpairoj, Saengpetpirote, แสงเพชรไพโรจน์, Saengpetchpairote | Thailand |