Isidora Aguirre Tupper (22 March 1919 – 25 February 2011) was a Chilean writer, an author mainly of dramatic works on social issues that have been performed in many countries in the Americas and Europe.

[1] Her best known work is La pérgola de las flores [es], which, constituted "one of the milestones in the history of Chilean theater in the second half of the 20th century.

[4] Back in Chile, "a chance encounter with the actor and theater director Hugo Miller on a trolleybus was decisive in defining her vocation and devoting herself completely to dramaturgy.

[7] In 1955 she premiered her first comedies, Carolina and La dama del canasto,[8] but very soon she dedicated herself to "committed theater", a genre to which a large part of her production belongs.

In 1959, she premiered her first tragedy, Población Esperanza, of marked social content and written in conjunction with the novelist Manuel Rojas.

After Augusto Pinochet took power in Chile, Isidora Aguirre, who remained in the country, lost her university job, but in her trips through Latin America, taught theater in workshops in Quito, Cali, Bogotá, and Mexico.

[12][13] As her friend and writer Virginia Vidal commented: "To Isidora, Chile buried her owing her the National Prize for Literature that would have been a diminished recognition of her vast work as a novelist and dramatist.

"[14] Posthumously, a fifth novel of Aguirre's was published, Guerreros del sur, written in collaboration with Renato Peruggi and with a prologue by Andrea Jeftanovic.

[1] In spite of her immense body of work, progressive spirit, defense of human rights, and patriotic activity, the Concertación governments repeatedly denied the National Prize for Literature to Isidora Aguirre.