Coup Atlas Research Database
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80003261977AttemptedMilitary coup

Thailand, 1977 — military coup attempt

Thailand (THA)Southeast Asia, AsiaMarch 26, 1977

Event Summary

On 26 March 1977 a group of military officers attempted a coup in Thailand against the ultra rightist civilian government of Prime Minister Thanin Kraivichien, which the military had itself installed after the bloody crushing of the student democracy movement in the October 1976 Thammasat University massacre. The attempt, associated with General Chalard Hiranyasiri, sought to seize power but was quickly suppressed by forces loyal to the ruling National Administrative Reform Council dominated by Admiral Sangad Chaloryu and General Kriangsak Chamanan. General Chalard was captured and executed, a rare instance of a Thai coup plotter being put to death.

Prime Minister Thanin survived this attempt, but his rigid and repressive government had alienated much of the military establishment, and in October 1977, just months later, the same senior officers who had put down the March coup themselves overthrew Thanin in a successful coup, installing General Kriangsak as prime minister and continuing Thailand's long cycle of military dominated politics.

Researched Details

Researched

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

Target identified in Coup Atlas research: Prime Minister Thanin Kraivichien survived the March 1977 coup attempt but was overthrown by the military that October
RESEARCHED NAME
Key figures
Thanin Kraivichien (prime minister of Thailand, target)
Chalard Hiranyasiri (general, coup leader, executed)

Sources

On 26 March 1977 General Chalard Hiranyasiri led a failed coup attempt against the government of Prime Minister Thanin Kraivichien in Thailand.
SOURCE REVIEWED Wikipedia, Thanin Kraivichien open source ↗
The Thanin government had been installed by the military after the 6 October 1976 Thammasat University massacre that crushed the student democracy movement.
SOURCE REVIEWED Wikipedia, Thanin Kraivichien open source ↗
General Chalard was captured and executed after the failed coup, a rare instance of a Thai plotter being put to death.
SOURCE REVIEWED Wikipedia, 1977 Thai coup attempt open source ↗
In October 1977 the ruling military officers overthrew Thanin and installed General Kriangsak Chamanan as prime minister.
SOURCE REVIEWED Wikipedia, Thanin Kraivichien open source ↗

Editorial Note

Date match to the 26 March 1977 Chalard coup attempt. Dataset codes it a military coup with leader unharmed, accurate for Thanin, who fell to a successful coup that October. Verified, though fine detail is lightly sourced this session. First Thailand record in the dataset run.

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
80003261977
Albrecht/Koehler/Schutz (CAM) id
CAM-800-1977-03-26

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

Outcome and Target

Coup Atlas research identifies the target as: Prime Minister Thanin Kraivichien survived the March 1977 coup attempt but was overthrown by the military that October.

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.

Wikipedia

https://en.wikipedia.org/wiki/Thanin_Krai Vi Chien

New York Times

“Thai Coup Attempt, Mostly Just a War Of Words, Is Foiled THAI COUP ATTEMPT MOSTLY JUST WORDS,” by David A. Andelman, March 27, 1977

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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