Bang is a bilingual crime drama English/Welsh television series, created by Roger Williams, that was first broadcast on S4C on 10 September 2017. The show, set in Port Talbot, Wales, stars Jacob Ifan as Sam Jenkins, a loner who becomes entangled in a web of lies after coming into possession of a gun, and Catrin Stewart as his sister Gina, who is a police detective. The second series was broadcast on S4C in February–March 2020.

Initial broadcasts carried entirely English subtitles (although these need to be accessed by the viewer, and do not appear on screen), while repeat airings carried encoded English subtitles for scenes spoken in Welsh. The series was concurrently available on the BBC iPlayer as part of the BBC's ongoing relationship with S4C.