El marginal is an Argentine crime drama television series created by Sebastián Ortega and Adrián Caetano through Underground Producciones for the channel Televisión Pública. Its first season, consisting of 13 episodes, starred an ensemble cast featuring Juan Minujín, Nicolás Furtado, Claudio Rissi, Gerardo Romano, Martina Gusmán, Carlos Portaluppi, Abel Ayala, Brian Buley, Daniel Pacheco, Marcelo Peralta, Emanuel García, Jorge Lorenzo, Mariano Argento, Gerardo Otero, Adriana Salonia, Maite Lanata, and Aylin Prandi, and was broadcast from 2 June to 8 September 2016, later becoming available on Netflix on 7 October 2016. It received the Golden Martín Fierro award, a Tato award, a Series Mania award, and was also nominated for a Platino Award for Best Miniseries or TV series.

Following the success of the first season, a second season was ordered, with Esteban Lamothe, Nacho Sureda, Roly Serrano, Diego Cremonesi, Verónica Llinás, Rodrigo Noya, and Daniel Fanego joining the cast. A prequel, it premiered on 17 July 2018, consisting of eight episodes and concluding on 4 September; it was released on Netflix on 28 September. An American adaptation, The Inmate, was released later that year on Telemundo.

The eight-episode third season premiered on 9 July 2019 and concluded on 27 August, with Lorenzo Ferro, Alejandro Awada, Osqui Guzmán, Ana María Picchio, Denis Corat, and David Masajnik as new cast members. It was released on Netflix on 27 September 2019. The fourth and fifth seasons were released exclusively on Netflix on 19 January 2022 and 4 May 2022 consisting of eight and six episodes, respectively. Rodolfo Ranni, Luis Luque, and Ariel Staltari joined in the fourth, with María Leal added in the fifth. A female-led spin-off series, En el barro, is currently in production by Netflix.