Family name Khalilzad (Khalilzad 
) , worldwide, is a rare last name. The cognomen Khalilzad is habitual in Afghanistan, where it is a rare surname, Iran, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khalilzad | Afghanistan, United States, Iran |
| nima khalilzad researcher (b. 1986) |
|