Guillermo del Toro Gómez (Spanish: [ɡiˈʝeɾmo ðelˈtoɾo]; born 9 October 1964) is a Mexican filmmaker, author, and artist. His work has been characterized by a strong connection to fairy tales, gothicism, and horror, often blending the genres to infuse visual or poetic beauty into the grotesque. He has had a lifelong fascination with monsters, which he considers symbols of great power. He is known for pioneering dark fantasy in the film industry and using insectile and religious imagery, his themes of Catholicism, and celebrating imperfection, underworld motifs, practical special effects, and dominant amber lighting.

Throughout his career, del Toro has shifted between Spanish-language films—such as Cronos (1993), The Devil's Backbone (2001), and Pan's Labyrinth (2006)—and English-language films, including Mimic (1997), Blade II (2002), Hellboy (2004) and its sequel Hellboy II: The Golden Army(2008), Pacific Rim (2013), Crimson Peak (2015), The Shape of Water (2017), Nightmare Alley (2021), and Pinocchio (2022).