Cognomen Kirojan (Kirojan 
) , all around the world, is a rare family name. The family name Kirojan is habitual in Indonesia, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Kirojan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kirojan | United States, India, Indonesia |