Celebrity Big Brother 2012, also known as Celebrity Big Brother 9, was the ninth series of the British reality television series Celebrity Big Brother. It began on 5 January 2012 and ended on 27 January 2012. It was the second Celebrity series to air on Channel 5 as part of the channel's then two-year contract with the show and the ninth series of the show to air overall. The series was sponsored by Plusnet. This was the first of two series of Celebrity Big Brother to air in 2012.