Arantza Díaz de Ilarraza Sánchez (San Sebastián, 18 April 1957) is a professor of informatics at the University of the Basque Country.

[citation needed] In 1983, she completed her degree dissertation and in 1990 defended her PhD thesis entitled "Management of natural-language dialogues for an intelligent teaching system".

Both Ixa and HiTZ are multidisciplinary teams (73 members, consisting of computer scientists, linguists and engineers) that promote research, training, technological transfer and innovation in the area of language technology, mainly for the Basque language.

[14] Díaz de Ilarraza was one of the first authors in the area of computer science to publish textbooks and teaching materials in Basque, with those books later being translated into Spanish.

In 1993, she published the Basque-language book Programen egiaztapena eta eratorpena with Xabier Arregi and Paqui Lucio Carrasco (UEU, 1993).