Itziar Ituño Martínez is a Spanish actress. Itziar Ituño studied acting at the Basauri Theater School. She also studied sociology. Her mother tongue is Castilian but she learned Basque at age 19, which allowed her to play on television series on Basque public channels. She appeared for the first time on television in the Basque film Agur Olentzero, agur (Goodbye Olentzero, Goodbye) which was released in 1997.

In 2008 she got a role in the Basque soap opera Goenkale (2000). In this television series, she played Nekane Beitia, a lesbian policewoman from the fictional village of Arralde. She played the role until 2015, when the show was canceled. This role increased her visibility in the Basque Country.

She continued to work as an actress, starring in the films Loreak (2014) (Spanish submission for the Academy Awards) and Igelak, released in 2015 and 2016 respectively. In 2017, she left the Basque Country to star in the television series Büyük Soygun (2017) (broadcast on Antena 3 and then acquired by Netflix) in the role of Raquel Murillo, a police negotiator.

In addition to her film, television and theater roles, she is also a singer in three bands: Dangiliske, EZ3, and INGOT. On 26 September 2017, she was a presenter of the Basque Film Gala and the EITB Gala for the 65th edition of the San Sebastian International Film Festival.