Jon Irazustabarrena Lizarralde (born 30 April 1986), known as Txusta, is a Spanish footballer who plays for Real Unión as a goalkeeper.

Born in Usurbil, Gipuzkoa, Txusta graduated from Real Sociedad's youth system, and made his debut with the reserves in the 2003–04 season, in the Segunda División B.

[1] In August 2009 he joined another reserve team, SD Eibar B also in the fourth division; he remained in that tier the following three years, representing CD Lagun Onak and Beasain.

[4] On 31 May 2014, as the Basque side were already promoted to La Liga, the 28-year-old Txusta played his first match as a professional, starting in a 1–0 home win against CD Lugo.

[6] Txusta signed for third-tier Real Unión in July 2015, after being released by Eibar.