Izaskun Zubizarreta Gerendiain (30 September 1970 – 5 August 2024) was a Spanish ski mountaineer.

Zubizarreta was born in Oiartzun on 30 September 1970.

She started ski mountaineering in 1997 and competed first in the Cronoescalada race in Cerler in 2006.

In the same year, she became a member of the national team.

Zubizarreta Gerendiain died on 5 August 2024, at the age of 53.