Cognomen Justan (Justan 
) , across the world, is a rare surname. The surname Justan is habitual in Georgia, where it is quite a rare surname, Philippines, where it is a rare surname, and Czechia. Measured by absolute frequency, it is commonest in Philippines, Indonesia, and Georgia. Likewise, Justan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Justan | Indonesia, Georgia, Philippines, United States, Myanmar |
| ivan justan researcher |
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| ivan justan (b. 1976) |
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