Coup Atlas Research Database
← Back to explorer
81711111960AttemptedMilitary coup

Republic of Vietnam, 1960 — military coup attempt

Republic of Vietnam (VNM)Southeast Asia, AsiaNovember 11, 1960

Event Summary

On 11 November 1960 dissident paratroop and marine officers of the Army of the Republic of Vietnam, led by Lieutenant Colonel Vuong Van Dong and Colonel Nguyen Chanh Thi of the Airborne Division, launched a failed coup against President Ngo Dinh Diem of South Vietnam. The rebels, angered by Diem's autocratic rule, the malign influence of his brother Ngo Dinh Nhu and sister in law Madame Nhu, and the promotion of loyal Can Lao party members over competent officers, mobilized three paratroop battalions and marines to seize key points in Saigon and surround Independence Palace. But rather than storm the palace, they paused to demand reforms, and Diem used the delay to stall with false promises of negotiation while loyal armored divisions marched on the capital.

Loyalist forces attacked the next day, and after fighting that killed some four hundred people, many of them bystanders, the revolt collapsed. The leaders fled to Cambodia, and Diem, his confidence boosted, deepened his reliance on loyalty over merit.

Researched Details

Researched

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

Target identified in Coup Atlas research: President Ngo Dinh Diem survived the paratrooper coup unharmed but was overthrown and killed in a later coup in November 1963
RESEARCHED NAME
Key figures
Ngo Dinh Diem (president of South Vietnam, target)
Vuong Van Dong (lieutenant colonel, coup organizer)
Nguyen Chanh Thi (airborne colonel, coup leader)

Sources

On 11 November 1960 a failed coup attempt against President Ngo Dinh Diem was led by Lieutenant Colonel Vuong Van Dong and Colonel Nguyen Chanh Thi of the Airborne Division, in response to Diem's autocratic rule and the influence of his brother Nhu and sister in law Madame Nhu.
SOURCE REVIEWED Wikipedia, 1960 South Vietnamese coup attempt open source ↗
The rebels encircled Independence Palace without attacking, believing Diem would comply with their demands, and this pause allowed Diem to call for aid from loyal units through phone lines that remained intact.
SOURCE REVIEWED Wikipedia, 1960 South Vietnamese coup attempt open source ↗
Diem bought time by stalling with promises of negotiations until two loyal army divisions arrived in the capital and put down the rebellion, and about four hundred people were killed in the fighting, many of them bystanders.
SOURCE REVIEWED Historynet, South Vietnam's First Coup open source ↗
The remaining paratroopers surrendered by late afternoon of the second day, the leaders Thi and Dong fled to Cambodia, and outsmarting the coup boosted Diem's confidence and deepened his practice of promoting officers by loyalty rather than competence.
SOURCE REVIEWED Historynet, South Vietnam's First Coup open source ↗

Editorial Note

Date match, well documented. First coup attempt against Diem in the dataset, before the 1962 palace bombing and the successful 1963 coup that killed him.

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
81711111960
Albrecht/Koehler/Schutz (CAM) id
CAM-817-1960-11-11

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

Outcome and Target

Coup Atlas research identifies the target as: President Ngo Dinh Diem survived the paratrooper coup unharmed but was overthrown and killed in a later coup in November 1963.

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.

Wikipedia

Los Angeles Times

“ARMY TAKES OVER VIETNAM: Army Ousts Government In Viet-Nam Troops Topple Government in Viet-Nam,” November 11, 1960

New York Times

“TOP REBELS JAILED IN SOUTH VIETNAM: Ngo Regime Crushed Coup Attempt–All Insurgent Troops Surrender Top Rebels Jailed In South Vietnam,”by jacques neva rd, November 13, 1960

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 →

Know something about this event?
Tips are reviewed against sources before anything is added.