Celebrity Big Brother 16, also known as Celebrity Big Brother: UK vs USA, was the sixteenth series of the British reality television series Celebrity Big Brother, hosted by Emma Willis and narrated by Marcus Bentley. The series launched on 27 August 2015 on Channel 5 in the United Kingdom and TV3 in the Ireland, and ended after 29 days on 24 September 2015. It is the ninth celebrity series and the fourteenth series of Big Brother overall to air on Channel 5.
The series launched under the new contract which renewed the show for a further three years, It was the only celebrity series to credit Denis O'Connor as creative director.
James Hill was named as the winner on 24 September.
Austin Armacost returned to the house for Celebrity Big Brother 19 as an All-Star, representing this series. He was second to be evicted.
On 14 August 2015, it was revealed that Channel 5 had partially reinstated live streaming from the House. For the first time since 2013, live streaming would air every weekday between midnight and 1am on 5*. 30 minutes of live streaming will also air on Channel 5 after the live eviction show on Friday, meaning 90 minutes of live streaming will air every Friday.
On 20 August 2015 it was revealed that a special six-part best bits series would be airing every Saturday night on 5*. The series will look back at some of the best moments from Celebrity Big Brother history and will feature a range of special guests. Each episode would have its own topic, the first being "Heroes vs Villains", with the second being "Flirty Friendships and more". The series began on 29 August 2015.
Channel 5 confirmed on 31 July 2015 that Big Brother's Bit on the Side would be airing seven nights a week for the first time since 2014. The weekday episodes will air on Channel 5, with the weekend episodes airing on 5*.