Family name Sivaroj (Sivaroj 
) , globally, is an extremely rare surname. Predominantly, Sivaroj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sivaroj | United States, India, Thailand |
Sakaew, Limvipuwat, Pongsinburapat, Kongsakul, Virojtanasan, Amattayawongyothin, Chonprakai, Terarattanachai, Suralertrungsri, and Kittiphanuwat