The Encyclopædia Iranica is dedicated to the study of Iranian civilization in the Middle East, the Caucasus, Central Asia, and the Indian Subcontinent. It also includes scholarly articles related to the reciprocal influences between Persia and its neighbors, extending from pre-history to the present. The disciplines represented include: anthropology, archaeology, geography, art history, ethnology, sociology, economics, history of religion, philosophy, mysticism, history of science and medicine, Islamic history, botany, zoology, folklore, development of agriculture and industry, political science, international relations, and diplomatic history.

Fascicle 6 of Volume XVI (pp. 561-672) starts with the article on Khomeini and ends with the entry on xiv. Ethnology of Qajar and Pahlavi Khorasan.