Family name Trojanov (Trojanov 
) , all over the world, is a very rare cognomen. The surname Trojanov is habitual in Belarus, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trojanov | United States, Belarus |
|
vjačeslav platonovič trojanov Czechoslovak legioneer (b. 1875) |
|