Coup Atlas Research Database
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63008191953SuccessfulMilitary coup

Iran, 1953 — military coup

Iran (IRN)Western Asia, AsiaAugust 19, 1953

Event Summary

In August 1953 Prime Minister Mohammad Mosaddegh and his government were overthrown in a covert operation in which the United States took the leading role, code-named Operation Ajax. The operation removed Mosaddegh from power and restored the pro-Western monarch Mohammad Reza Shah Pahlavi as Iran's leader.

Films & Footage

Prime Minister Mohammad Mossadegh, portrait, August 1951.
Prime Minister Mohammad Mossadegh, portrait, August 1951. Photo: International News Photos
Mohammad Mossadegh, portrait, c. 1952.
Mohammad Mossadegh, portrait, c. 1952. Photo: iichs.ir

Archival media is credited to its holding collection and license. Media sourcing policy →

Researched Details

Researched

Independent research, added record by record. Hover any label for what it means.

Target identified in Coup Atlas research: Mohammad Mosaddegh, Prime Minister of Iran (overthrown)
RESEARCHED NAME

Sources

Mosaddegh and his government were overthrown in August 1953.
SOURCE REVIEWED Encyclopaedia Britannica, "1953 coup in Iran" (Fid Backhouse and others) open source ↗
The United States took the leading role in a covert operation called Operation Ajax.
SOURCE REVIEWED Encyclopaedia Britannica, "1953 coup in Iran" open source ↗
The operation restored Mohammad Reza Shah Pahlavi, a pro-Western monarch, to power.
SOURCE REVIEWED Encyclopaedia Britannica, "1953 coup in Iran" open source ↗

How It Unfolded

Hand-coded by Coup Atlas from the sources on this page, using a fixed list of tactics. Only events we have read through carry this coding, so most records do not have it yet.

Led by
Foreign-backed
How long it took
Under a day — resolved within 24 hours
  • Mass mobilization of civilians (for or against)
  • Direct foreign involvement or backing
  • Seizure of broadcasters / coup declaration on state media
  • Mass arrests of officials, officers, or opponents

Cross-Reference

Only one dataset carries it. One of the three reference datasets we check against carries this event; the others do not list it. That is not a contradiction — the datasets cover different periods and use different thresholds — but it means the record has had less outside corroboration.

Identifiers for finding this same event in the other datasets:

Cline Center id
63008191953

How the match is made is described in crossref-report.md.

Outcome and Target

Coup Atlas research identifies the target as: Mohammad Mosaddegh, Prime Minister of Iran (overthrown).

Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; not physically harmed. The baseline file does not name individual targets; researched names are kept in a separate layer.

Baseline Dataset Citation

Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
⚑ This citation establishes the coded baseline record; use the claim-level sources above for the researched narrative.

Baseline Source-Document Entries

CSP

Named in the baseline source document; no article citation was recorded.

Powell and Thyne

Named in the baseline source document; no article citation was recorded.

Wikipedia

New York Times

“Mossadegh terms Majlis Dissolved,” August 16, 1953
“Shah Flees Iran after Move to Dismiss Mossadegh fails,” by Kennett Love, August 17, 1953
“Army Seizes Helm,” by Kennett Love, August 20, 1953
“MOSSADEGH DEATH DEMANDED IN IRAN Prosecutor Asks the Extreme Penalty – Indictment Against Deposed Premier Released,” by Robert C. Doty, October 5, 1953

This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →

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