1 November 1941) is an Uruguayan human rights activist, artist, and former nun.
Though she was born in Uruguay, she was active in Ecuador as an activist for the rights of indigenous peoples.
Curbelo was a member of the Mediation Commission with the Confederation of Indigenous Nationalities of Ecuador following the 1990 uprising, witnessed the surrendering of arms by Contra groups to the Sandinista government of Nicaragua, and participated in the peace accord between guerrilla fighters and the government of Guatemala.
She is the founder of Ser Paz, a Guayaquil-based organization to help reintegrate former gang members into society.
Curbelo has twice been nominated for the Nobel Peace Prize.