Tadeo Zarratea Dávalos (born 28 October 1946 in Yuty) is a Paraguayan lawyer, activist, linguist, and author.
He graduated as lawyer and linguist from the Universidad Nacional de Asunción and has long advocated for the rights of indigenous people.
He became famous as the author of Kalaito Pombero, one of the first novels to ever be written in the Guarani language.