Coup Atlas Research Database
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64005201963AttemptedMilitary coup

Turkey, 1963 — military coup attempt

Turkey (TUR)Western Asia, AsiaMay 20, 1963

Event Summary

On 20 to 21 May 1963 Colonel Talat Aydemir, the former commander of the Turkish Military Academy who had been forced into retirement after his failed February 1962 coup, mounted a second and bloodier attempt to overthrow the coalition government of Prime Minister Ismet Inonu. Aydemir and his chief associate Major Fethi Gurcan led their cadets and allied units to seize the radio station in Ankara and announced that the army had taken over the government, dissolved parliament, and abolished the political parties. But a loyalist officer slipped into the studio and broadcast a denial, rallying loyal forces; air units flew over Ankara against the rebels, the deceived cadets dispersed, and by dawn the government had regained control.

The brief clashes killed at least six people. Unlike the leniency shown after 1962, this time the government responded harshly: Aydemir was arrested, tried, and executed, and his sympathizers were purged from the military.

Researched Details

Researched

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

Target identified in Coup Atlas research: Prime Minister Ismet Inonu and the civilian government survived the second Aydemir coup; the leaders were executed
RESEARCHED NAME
Key figures
Ismet Inonu (prime minister of Turkey, target)
Talat Aydemir (cashiered colonel, coup leader, executed)
Fethi Gurcan (major, co-leader, executed)

Sources

The 1963 Turkish coup attempt was a failed coup by dissident officers led by Colonel Talat Aydemir, former Commandant of the Turkish Military Academy, along with Major Fethi Gurcan, aiming to overthrow the coalition government headed by Ismet Inonu.
SOURCE REVIEWED Wikipedia, 1963 Turkish coup attempt open source ↗
Aydemir mobilized his forces on the evening of May 20, entered the Military Academy misleading the cadets into joining, and by midnight the rebels had seized the radio station and announced Aydemir had taken over the government, dissolving parliament and abolishing political parties.
SOURCE REVIEWED Wikipedia, 1963 Turkish coup attempt open source ↗
A loyalist lieutenant colonel infiltrated the studio and broadcast a denial calling for loyal forces to rally, after which support for the coup did not materialize, the deceived cadets dispersed, and by dawn government forces had regained control, with at least six deaths.
SOURCE REVIEWED Wikipedia, 1963 Turkish coup attempt open source ↗
Unlike the initial lenience after the 1962 coup attempt where the rebels were pardoned, a harsher approach was taken this time and Aydemir was arrested and sentenced to death.
SOURCE REVIEWED Wikipedia, 1963 Turkish coup attempt open source ↗

Editorial Note

Date match, well documented. Aydemir's second and final coup attempt, following his February 1962 attempt enriched in batch 62. Dataset leader fate of remained in office is accurate.

Cross-Reference

Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.

Identifiers for finding this same event in the other datasets:

Cline Center id
64005201963
Albrecht/Koehler/Schutz (CAM) id
CAM-640-1963-05-20

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

Outcome and Target

Coup Atlas research identifies the target as: Prime Minister Ismet Inonu and the civilian government survived the second Aydemir coup; the leaders were executed.

Baseline coding: Coup attempt failed to remove the incumbent. Recorded leader fate: remained in office; 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.

Luttwak

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

New York Times

“TURKEY SEEKS DEATH FOR 36 AS PLOTTERS,” June 5, 1963

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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