Surname Doykos (Doykos 
) , across the world, is a very rare last name. The cognomen Doykos is habitual in Bulgaria, where it is a rare surname, the United States, where it is an extremely rare surname, and Canada. Much less frequently, Doykos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Doykos | United States, Canada, Bulgaria |