Pixar’s Coco was primarily produced in English for its original release.
The film was made by Pixar Animation Studios for Walt Disney Pictures, and its original dialogue and songs were recorded in English. The English-language cast includes Anthony Gonzalez as Miguel, Gael García Bernal as Héctor, and Benjamin Bratt as Ernesto de la Cruz.
Coco is deeply shaped by Mexican culture and includes Spanish words, names, music, and traditions. That cultural setting sometimes leads viewers to assume that Spanish was the film’s original production language. However, the theatrical version made for the international English-language market was produced in English.
The film was also dubbed into Spanish and many other languages for different territories. A question about the original production language is therefore different from asking which language audiences may hear in a particular country.