In all the world, Dyachkov (Дьячков 
, Дъячков , Dyachkov 
) is an extremely rare boy's forename. Much more frequently, Dyachkov is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Дьячков | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Дъячков | Kazakhstan, Russia |
| Dyachkov | Kazakhstan, Russia, United States, Poland, Canada |
| Дячков | Kazakhstan, Russia, Ukraine, Bulgaria |
Djatschkow, Диачков, Дйачков, Дьячьков, and דיאצ'קוב
Mr, Kirill, Daniil, Dmitry, Dmytro, Leonid, Nikita, Victor, Vitaly, Viktor, Mikhail, Aleksey, Ravshan, Dmitriy, Larissa, Nikolai, Nikolay, Evgeniy, Ehduard, Vasiliy, Vitaliy, Alexandr, Antony, Andrey, Andrew, Alexey, Mark, Alex, Gleb, Ilya, Ivan, Igor, Oleg, Maxim, Misha, Anton, Anatoliy, Artem, Peter, Roman, Denis, Danil, Esfir, Vadim, Yegor, Yuriy, Matvey, Sergey, Pavel, and Vladimir