Family name Dusby (Dusby 
) , in the entire world, is an extremely rare surname. The family name Dusby is habitual in Honduras, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Dusby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dusby | Honduras, Malaysia, United States |