Estíbaliz "Esti" Gabilondo Cuéllar (born November 16, 1976 in San Sebastián) is a Spanish actress and journalist.
She is niece of the former Minister of Education Ángel Gabilondo, and the journalist Iñaki Gabilondo.
She studied Audiovisual Communication at the University of Navarre and drama at the Laboratorio de Teatro William Layton.
After several works as an actress, she became the first female reporter in the program Caiga quien caiga in 2008.