Iranian-Americans, also known as Persian-Americans, are United States citizens or nationals who are of Iranian ancestry or who hold Iranian citizenship. According to the National Organization for Civil Registration, an organization of the Ministry of Interior of Iran, the United States has the greatest number of Iranians outside the country.
Most Iranian-Americans arrived in the United States after 1979 in the wake of the Iranian Revolution and the fall of the Iranian monarchy. Over 40% of them settled in California, specifically Los Angeles, where they formed distinct ethnic enclaves, such as the Angelino community of "Tehrangeles" in Westwood, Los Angeles.