Miren Lourdes Oñederra Olaizola (born 9 June 1958) is a Basque writer and professor.

Oñederra was born in San Sebastián in 1958. She studied for her first degree in Spain at the University of Deusto. After graduating in 1980 she took her masters at the University of Iowa.^[1] She returned to the Basque country to take her doctorate in philology supervised by Koldo Mitxelena. She was appointed a professor in her home town in 1982.

In 1999 she published her first novel And the woman said to the serpent and this was successful and received a number of awards including the Basque Government Prize for Literature in 2000.^[2] The book has been translated into Spanish, English and Russian.

In 2014 she was a professor at the University of the Basque Country.