What is the original language of Brooklyn Nine-Nine?

The original language of Brooklyn Nine-Nine is English.

Brooklyn Nine-Nine is an American television series produced primarily for English-speaking audiences in the United States. Its dialogue, original scripts and first-run broadcasts are in English, making English the canonical answer to the language question.

The series premiered on Fox on September 17, 2013, before moving to NBC in 2019. It ran for eight seasons and 153 episodes, following detectives and officers at the fictional 99th Precinct of the New York City Police Department in Brooklyn. Although the show includes characters with different cultural backgrounds and occasional dialogue in other languages, those moments do not change its original language.

A common mistake is to answer Spanish because Amy Santiago is played by Melissa Fumero and Rosa Diaz by Stephanie Beatriz, or because the series features Latino characters and occasional Spanish phrases. Those are character and story details, not the production language. Portuguese, French and Spanish may appear in subtitles or brief scenes, but English is the show’s original language.