Marcelo Quiroga Santa Cruz (13 March 1931 – 17 July 1980) was a noted writer, dramatist, journalist, social commentator, university professor, and socialist political leader from Bolivia.

[1] As a congressman of the Falange Socialista Boliviana, he was jailed by the regime of General René Barrientos (1964–69) for his loud denunciation of the San Juan Massacre, in which dozens of dissenting miners were murdered by the military of Bolivia in the Siglo XX mines on Saint John's Eve 1967.

In 1969, he was appointed Minister of Mining and Energy by de facto President Alfredo Ovando Candía, who purported to be a populist dedicated to bringing major structural reforms.

From his congressional seat, he led the effort to bring to trial the former dictator Hugo Banzer, on charges of massive human rights violations and economic mismanagement.

In 2010, Quiroga's wife María Cristina Trigo filed a lawsuit before the Inter-American Commission on Human Rights (IACHR) against the Bolivian government due to its lack of willingness to locate them.