Family name Календарёв (Календарёв 
) , around the globe, is a very rare cognomen. The last name Календарёв is habitual in Kazakhstan, where it is a very rare surname, Kyrgyzstan, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Календарёв | Kyrgyzstan, Kazakhstan, Russia |
Kalendarev, and Kalendaryov