Family name Bykin (Bykin 
, Быкин 
) , around the world, is a rare last name. The last name Bykin is characteristic of Russia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Germany, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Russia, Germany, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Bykin | Germany, Russia, Canada, United States, India |
| Быкин | Kazakhstan, Russia |