Family name Dorj (Dorj 
, Дорж 
, Дорй ) , throughout the world, is quite a rare last name. The surname Dorj is characteristic of Mongolia, where it is a common surname, South Korea, where it is a rare surname, and Belgium. Not in comparison with a country's population, it most frequently occurs in Mongolia, South Korea, and Russia. Very seldom, Dorj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dorj | South Korea, United States, Japan, Mongolia, China |
| Дорж | Ukraine, Russia, Kazakhstan |
| Дорй | Russia |
| dorj erdeni akhai (b. 1650) |
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| luvsandashiin dorj Mongolian cross-country skier, MN (b. 1943) |
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| yanjmaagiin dorj Mongolian judoka (b. 1954) |
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| ariunzaya dorj researcher |
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| gereltuya dorj researcher |
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| dorj odkhuu researcher |
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| barkhas dorj MN |
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