Last name Чаиков (Чаиков 
, Chaikov 
, Chaykov 
) , worldwide, is a rare surname. The last name Чаиков is habitual in Bulgaria, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan. In absolute terms, the name is most common in Bulgaria, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Чаиков | Kazakhstan, Russia |
| Chaikov | Russia, Belarus, Poland, Ukraine, Israel |
| Chaykov | Russia, Czechia, Belarus, Bulgaria, Ukraine |