Family name เกตน์ธีรโรจน์ (เกตน์ธีรโรจน์ 
) , across the world, is an extremely rare cognomen. The cognomen เกตน์ธีรโรจน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เกตน์ธีรโรจน์ | Thailand |