Guillermo Larrazábal Arzubide (10 February 1907 – 1983) was a Spanish stained glass artist who was active in Ecuador.

His parents, Juan Domingo Larrazábal Basarrate and Daniela Arzubide Villa, were both from Bilbao, Spain.

[1] During the Spanish Civil War, the Republican faction arrested him based on false accusations and took him to a detention camp.

He found work at the studio Vitrieras de Arte (Artistic Stained Glass) in San Sebastián.

[1] Larrazábal completed 60 stained glass windows for Cuenca's cathedral, the largest number of his works in any one location.

He also created stained glass windows in Academia Militar de Quito (Quito Military Academy) (closed 1991), Guayaquil's Unidad Educativa San José La Salle, and the Cuenca home of businessman Guillermo Vázquez.

[1][5] During the remainder of his career, Larrazábal created 87 stained glass works that are located across the vast majority of Ecuador's provinces.

[1][4] According to Luis Alberto Luna Tobar, Larrazábal was "a theologian who meditated with light and color on stained glass, in search of the face of God".