Besides English, Spanish is the original language listed for Narcos.
That language listing reflects the series’ bilingual design. Narcos is an American production, but much of its story takes place in Colombia and follows Colombian characters, so many scenes are performed in Spanish. English is used extensively for the American DEA characters and for narration and interactions involving the United States.
The language choice also supports the show’s setting and perspective. Its first two seasons portray Pablo Escobar’s Medellín-based operation, Colombian political violence, and the efforts of local authorities alongside American agents. The result is not simply an English-language drama translated into Spanish; both languages are part of the original presentation.
Viewers sometimes confuse original language with dubbing or subtitle options on Netflix. Spanish is not merely an alternate dub here—it is one of the two languages in which the series was originally made. The related series Narcos: Mexico likewise uses both English and Spanish, but it is a separate production.