Last name Хэгай (Hegai 
, Khegai 
, Khegay 
) , in the world, is quite a rare surname. The surname Хэгай is habitual in Uzbekistan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Czechia. Measured by absolute frequency, it is commonest in Uzbekistan, Russia, and Kazakhstan. Much less frequently, Хэгай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hegai | Kazakhstan, India, Mexico, Germany, Russia |
| Khegai | Malaysia, Kazakhstan, India, United States, Russia |
| Khegay | Kazakhstan, United States, Russia, Czechia, Uzbekistan |
| Хэгай | Russia, Kazakhstan |