Mertxe Aizpurua Arzallus (born 18 January 1960) is a Basque journalist and politician who currently serves as Member of the Congress of Deputies of Spain.

[1] Aizpurua was editor of the Egin newspaper and Punto y Hora de Euskal Herria magazine.

[3] In September 1983 Punto y Hora published an editorial on Basque separatist "soldiers" and an interview with a brother of an ETA separatist killed whilst handling an explosive device in Tafalla, Navarre.

[8][9] In June 2001 she was interrogated by Audiencia Nacional judge Baltasar Garzón after Gara published an interview with two ETA leaders.

[14] She was mayor of Usurbil from 2011 to 2015 and president of Udalbiltza (an association of municipalities from the greater Basque Country) from 2012 to 2015.