Rhydian James Roberts, also known mononymously as Rhydian, is a Welsh former baritone singer, television presenter and musical theatre actor. He rose to fame in series 4 of The X Factor (2007), and subsequently became less widely known. Rhydian Roberts retired from performing in February 2023 with a farewell album. He is currently an artist manager at Neil O'Brien Entertainment.

The X Factor is a British television music competition to find new singing talent. The fourth series was broadcast on ITV from 18 August 2007 and was won by Leon Jackson on 15 December 2007, with Rhydian Roberts finishing as the runner-up and Dannii Minogue emerging as the winning mentor. Dermot O'Leary presented for the first time, replacing Kate Thornton, who had been presenting the show since series 1 in 2004. Fearne Cotton replaced Ben Shephard as presenter on the spin-off show The Xtra Factor. The original judging panel consisted of Simon Cowell, Minogue, Sharon Osbourne and Brian Friedman. Friedman left the panel halfway through the first audition episode and was replaced by former judge Louis Walsh.