Family name Толубай (Толубай 
, Tolubai 
) , throughout the world, is a rare cognomen. The cognomen Толубай is characteristic of Kyrgyzstan, where it is quite a rare surname, Ukraine, where it is an extremely rare surname, and Russia. Not in comparison with a country's population, it is the most numerous in Kyrgyzstan, Russia, and India. Likewise, Толубай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Толубай | Russia, Kyrgyzstan, Ukraine, Kazakhstan |
| Tolubai | India |