Last name ตวงโรจน์โอฬาร (ตวงโรจน์โอฬาร 
) , all around the world, is an extremely rare surname. The family name ตวงโรจน์โอฬาร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ตวงโรจน์โอฬาร | Thailand |