Coup Atlas Research Database
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13507051948AttemptedMilitary coup

Peru, 1948 — military coup attempt

Peru (PER)South America, AmericasJuly 5, 1948

Event Summary

On 5 July 1948 Lieutenant Colonel Alfonso Llosa launched a right-wing military rebellion against President Jose Luis Bustamante y Rivero of Peru, which government troops suppressed by 7 July as the government declared a nationwide state of siege. Bustamante, elected in 1945 in Peru's first extended experiment in political democracy with APRA support, was by mid-1948 caught between an APRA he had broken with and an increasingly conspiratorial right allied to the agro export oligarchy and anti-APRA officers such as his former interior minister General Manuel Odria. The Llosa rising failed and Bustamante remained in office, but the pressures it expressed kept building: an APRA linked naval revolt at Callao was bloodily crushed on 3 October 1948, and on 27 October Odria rose in Arequipa and completed the coup that deported Bustamante to Argentina on 29 October 1948.

Researched Details

Researched

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

Target identified in Coup Atlas research: President Jose Luis Bustamante y Rivero survived the Llosa rebellion unharmed and remained in office until Odria's coup deposed him in late October 1948
RESEARCHED NAME
Key figures
Jose Luis Bustamante y Rivero (president of Peru, target)
Alfonso Llosa (lieutenant colonel, rebellion leader)
Manuel A. Odria (anti-APRA general who seized power in October)

Sources

Government troops suppressed a right-wing rebellion led by Lt. Colonel Alfonzo Llosa on July 5 to 7, 1948, and the government declared a state of siege on July 5, 1948.
SOURCE REVIEWED University of Central Arkansas DADM Project, Peru 1912 to present open source ↗
Bustamante was elected in 1945 with APRA support in Peru's first extended experiment in political democracy, but divergence of objectives cooled the alliance until he relied on conservative and army backing.
SOURCE REVIEWED U.S. State Department, FRUS 1951 vol. II open source ↗
The turning point toward the oligarchy's coup came with the 3 October 1948 Callao sailors' uprising encouraged by APRA, after which Odria revolted at the head of the Arequipa garrison on 27 October 1948.
SOURCE REVIEWED Wikipedia, 1948 Peruvian coup d'etat open source ↗
The Odria coup succeeded when the Lima garrison under General Zenon Noriega joined it, and President Bustamante was deported to Buenos Aires.
SOURCE REVIEWED Wikipedia, 1948 Peruvian coup d'etat open source ↗

Editorial Note

Dataset date 5 July 1948 matches the documented start of the Llosa rebellion, suppressed over 5 to 7 July. Sits in a chain of three 1948 risings against Bustamante: Llosa in July, the Callao naval revolt in October, and Odria's successful Restorative Revolution at month's end, the last already enriched among the successful coups.

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
13507051948

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

Outcome and Target

Coup Atlas research identifies the target as: President Jose Luis Bustamante y Rivero survived the Llosa rebellion unharmed and remained in office until Odria's coup deposed him in late October 1948.

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

The Sun

“PERU CURBS FREEDOMS: Constitutional Guarantees Suspended After Revolt,” July 6, 1948

The New York Times

“REVOLT LAUNCHED IN SOUTHERN PERU: Basic Liberties Suspended as 2 Army Garrisons Rebel – Most of Troops Loyal,” July 6, 1948 “3-Day Peruvian Revolt Ends as Leader Flees,” July 8, 1948 “CURBS IN PERU REMOVED: Government Announces Uprising Has Been Suppressed,” July 10, 1948

Chicago Daily Tribune

“REVOLT IN PERU ENDS; REPORT LEADER FLEEING: Trials Started Under Courts Martial,” July 8, 1948

South China Morning Post

“REVOLT IN PERU: By Army Garrisons At Puno And Julia Ca Precautions Taken Lima, July 5,” July 7, 1948

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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