The fourth series of the British version of The Masked Singer premiered on ITV on 1 January 2023, and concluded on 18 February 2023. The series was won by singer Charlie Simpson as "Rhino", with singer Ricky Wilson finishing second as "Phoenix", and singer Natalie Appleton placing third as "Fawn".
On 14 February 2022, following the conclusion of the third series, ITV announced the commissioning of a fourth and fifth series. Filming for the series took place in October 2022.
Following the series' commissioning, it was confirmed that Joel Dommett would return as presenter, with Jonathan Ross, Davina McCall, Rita Ora and Mo Gilligan all returning to the panel.
Stephen Mulhern served as a guest panellist in the sixth episode, Peter Crouch, who was a panellist on the second series of The Masked Dancer, served as a guest panellist in the seventh episode, and Lee Mack served as a guest panellist in the eighth episode.
Official ratings are taken from BARB, utilising the four-screen dashboard which includes viewers who watched the programme on laptops, smartphones, and tablets within 7 days of the original broadcast.