Family name ทรงวิโรจน์ (ทรงวิโรจน์ 
) , all over the world, is an extremely rare last name. The family name ทรงวิโรจน์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ทรงวิโรจน์ | Thailand |