Family name ไวยโรจน์ (ไวยโรจน์ 
, Wairot , Waiyarot ) , across the world, is a rare last name. The surname ไวยโรจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, ไวยโรจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไวยโรจน์, Waiyarot, Wairot | Thailand |