The Sandinista revolutionary process in Nicaragua began in 1961 with the founding of the Sandinista National Liberation Front (Frente Sandinista de Liberación Nacional).

Verified by Lenz · May 11, 2026

The Short Version

The evidence largely supports dating the Sandinista movement’s origin to 1961, when the organization that became the FSLN was founded. The main caveat is that the “Sandinista” name appears to have been adopted slightly later, and some scholars distinguish the 1961 organizational founding from the later revolutionary phase. Even so, 1961 is a defensible and common starting point.

Caveats

Some academic sources indicate the organization began in 1961 as the FLN, with the full “Sandinista” name adopted in 1962-1963.
Historians do not all use “revolutionary process” the same way; some date that more specifically to the late 1960s and 1970s rather than the founding year.
Commemorative social-media and partisan sources echo the 1961 date but are weaker evidence than Britannica, university, and scholarly publications.

The Receipts

Sandinista | Nicaragua, Marxist-Leninist Movement
Britannica
Frente Sandinista de Liberación Nacional
Wikipedia
Sandinista National Liberation Front - Wikipedia
Wikipedia
El Frente Sandinista de Liberación Nacional (FSLN) ¡Patria libre o morir!
Revista de Ciencias Sociales (SciELO Costa Rica)Jun 1, 2018
Nacimiento del FSLN (Fundación del FSLN en 1961)
ScribdDec 31, 2015
The Sandinistas
Brown University
Sandinista National Liberation Front | History | Research Starters
EBSCO
Nicaragua: A revolution that lives
Liberation News
La fundación del FSLN: fieles a la causa de Sandino
Diario Barricada
The Sandinista Revolution: A Global Latin American History
Harvard University

+ 12 more sources — see the full list on Lenz

Filed Under

Frente Sandinista De Liberación NacionalNicaraguaSandinista National Liberation Front