Big Brother 2010, also known as Big Brother 11, was the eleventh series of the British reality television series Big Brother, and the last series to be broadcast on Channel 4. The series launched on 9 June 2010, and was aired on Channel 4 and E4 for 77 days with the finale on 24 August 2010, where Josie Gibson was crowned the winner with 77.5% of the public vote.

Big Brother 11 was produced by Remarkable Pictures, a division of Endemol. This series was confirmed since 2006 as part of a £180million contract between Endemol UK and Channel 4. The series was sponsored by skincare brand Freederm. The 24-hour live streaming had been reinstated for this series and was available via the website as a fee-based service.

Immediately following the final of this series, an additional series, Ultimate Big Brother began with memorable Celebrity Big Brother and Big Brother housemates from across the show's history, Gibson re-entered the house just moments after she won Big Brother 11, however she quit the show after less than 48 hours.