Cognomen Аманулла (Amanullah 
, Amanulla 
, Аманулла 
) , worldwide, is a common surname. The cognomen Аманулла is habitual in Sri Lanka, where it is quite a common surname, Brunei, and United Arab Emirates, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Southern Asia, particularly India, Bangladesh, and Sri Lanka. More prevalently, Аманулла is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Amanullah | Afghanistan, Bangladesh, India, Pakistan, Saudi Arabia |
| Amanulla | Bangladesh, India, Pakistan, Sri Lanka, Saudi Arabia |
| Аманулла | Kazakhstan, Ukraine, Kyrgyzstan, Belarus, Russia |
| Amanoulla | France, India |