Surname Худаяр (Khudayar 
, Худаяр 
) , in the world, is a rare last name. The surname Худаяр is characteristic of Afghanistan, where it is a rare surname, Kyrgyzstan, and Canada, where it is a very rare surname. Measured by absolute frequency, it is commonest in Afghanistan, Kyrgyzstan, and India. Likewise, Худаяр is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khudayar | Saudi Arabia, India, Canada, Pakistan, Afghanistan |
| Худаяр | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |