Ruth Alexandra Elisabeth Jones is a Welsh actress, comedian, writer, and producer. She co-wrote and co-starred in the award-winning BBC sitcom Gavin & Stacey. She later co-wrote and starred in the Sky One comedy-drama Stella (2012–2017), for which she was nominated for the BAFTA Award for Best Female Comedy Performance and won the BAFTA Cymru Award for Best Screenwriter.

Gavin & Stacey is a British sitcom written by James Corden and Ruth Jones about two families: one in Billericay, Essex; one in Barry, Vale of Glamorgan. Mathew Horne and Joanna Page play the eponymous characters Gavin and Stacey, while Corden and Jones star as Smithy and Nessa. Alison Steadman and Larry Lamb star as Gavin's parents Pam and Mick, Melanie Walters plays Stacey's mother Gwen, and Rob Brydon plays Stacey's uncle Bryn.