The X Factor is a British television music competition to find new singing talent. The third series was broadcast on ITV from 19 August 2006 until 16 December 2006. Louis Walsh, Sharon Osbourne and Simon Cowell all returned for their third series on the judging panel. Kate Thornton returned to present the main show on ITV, while Ben Shephard returned to present spin-off show The Xtra Factor on ITV2. After the semi-final on 9 December, Cowell became the winning judge even though the series had not yet finished, as two of his acts, Ray Quinn and Leona Lewis, became the two finalists. Lewis won the series on 16 December, with Quinn finishing as runner-up.

The X Factor is a British reality television music competition, created by Simon Cowell. Premiering on 4 September 2004, it was produced by Fremantle's British entertainment company, Thames, and Cowell's production company Syco Entertainment for ITV, as well as simulcast on Virgin Media One in Ireland. The programme ran for around 445 episodes across fifteen series, each one primarily broadcast late in the year, until its final episode in December 2018. The majority of episodes were presented by Dermot O'Leary, with some exceptions: the first three series were hosted by Kate Thornton; while Caroline Flack and Olly Murs hosted the show for the twelfth series.