Tehran
capital city of Iran
Tehran is the capital and largest city of Iran. It is also the capital of Tehran province and the administrative center for Tehran County and its Central District. With a population of around 9 million in the city, and 16.8 million in the metropolitan area, Tehran is the most populous city in Iran and West Asia, the largest metropolitan area in the Middle East and the 24th-most-populous metropolitan area in the world. Greater Tehran includes several municipalities, including Eslamshahr, Shahriar, Qods, Malard, Golestan, Varamin, Pakdasht, Qarchak, Nasimshahr, Parand, Pardis, Andisheh, Fardis, Tajrish, and Rey.
In classical antiquity, part of the territory of present-day Tehran was occupied by Rhages, a prominent Iranian city that was not destroyed in the medieval Arab and Mongol invasions. Rey is absorbed into the metropolitan area of Greater Tehran. Tehran was first chosen as the capital of Iran in 1786 by Agha Mohammad Khan of the Qajar dynasty, because of its proximity to Iran's territories in the Caucasus—which were contested in the Russo-Iranian Wars—and to avoid the vying factions of prior ruling Iranian dynasties; the capital of Iran had been moved several times throughout its long history, with Tehran becoming the 51st. Under Reza Shah, Tehran witnessed Iran's first institute of higher learning, bank, railway line, and museum. Large-scale construction works began in the 1920s, and Tehran became a destination for mass migrations from all over Iran, especially in the 20th century. Tehran was at the center of the Iranian Revolution, and experienced major bombing damage during the Iran–Iraq War, the Twelve-Day War, and the 2026 Iran war.
“Tehran” enters the record as capital city of Iran. Crown Archives preserves that source wording while asking what Tehran, capital and city can confirm, complicate or overturn.
Why this record matters
“Tehran” is worth following because a concise public description often conceals a longer documentary argument. Here, Tehran, capital and city provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q3616. VIAF identifies the subject as 124320545. The Library of Congress control number is n79039626. Authority coordinates are 35.689, 51.390. 3 of 5 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1786 and 2026.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Tehran”, its source revision and the description used here.
- Expand the search: follow Tehran primary sources, Tehran archive and Tehran research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Tehran”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Tehran” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.