Pobol y Cwm (People of the Valley; Welsh pronunciation: [ˈpɔbɔl ə ˈkʊm]) is a Welsh-language soap opera produced by the BBC since October 1974. The longest-running television soap opera produced by the BBC, Pobol y Cwm was originally transmitted on BBC Cymru (now BBC One Wales) and later transferred to the Welsh-language station S4C when it opened in November 1982.

The programme typically centres around the residents of Cwmderi – a fictional, Welsh speaking, agricultural community. Its original working title was Pentrefelin.

Apart from rugby and football specials, Pobol y Cwm is consistently one of the most watched programmes of the week on S4C. On 25 September 2019, the soap hit a significant broadcasting landmark when it aired its 8,000th episode. On 16 October 2024, the show celebrated its 50th anniversary with an extended-length episode. In addition, the set was opened to the public with tours available around the studios and the main high street.