The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Nevada, Oklahoma, Texas, and Utah.The largest cities by metropolitan area are Phoenix, Las Vegas, El Paso, Albuquerque, and Tucson.

The Iranian languages or Iranic languages are a branch of the Indo-Iranian languages in the Indo-European language family that are spoken natively by the Iranian peoples, predominantly in the Iranian Plateau.. The Iranian languages are grouped in three stages: Old Iranian (until 400 BCE), Middle Iranian (400 BCE–900 CE) and New Iranian (since 900 CE).

This is a list of notable Iranian-Americans of all Iranian ethnic backgrounds, including both original immigrants who obtained American citizenship and their American descendants.. To be included in this list, the person must have a Wikipedia article showing they are Iranian-American or must have references showing they are Iranian American.