Top Boy is a British crime drama thriller television series created and written by Ronan Bennett. The series is set on the fictional Summerhouse estate in the London Borough of Hackney. It focuses on two drug dealers, Dushane (Ashley Walters) and Sully (Kane Robinson), along with others involved with drug dealing and gang violence in London.

There are 32 episodes across five series. The first two series, with 4 episodes each, were broadcast on Channel 4, with the first series airing over four consecutive nights from 31 October to 3 November 2011 and the second series airing from 20 August to 10 September 2013. Although storylines for a third series were proposed, the series was dropped by Channel 4 in 2014.

Following interest from Canadian rapper Drake, it was announced in 2017 that Netflix would revive the series, with both Ashley Walters and Kane Robinson, as well as the original crew, reprising their roles, and Drake and his team serving as executive producers. The third and fourth series premiered on Netflix in September 2019 and March 2022, respectively, and were presented as the first and second series of an original Netflix series. The previous two series originally broadcast in the UK were added to Netflix under the name Top Boy: Summerhouse. A fifth and final series (third series produced by Netflix) was renewed on 31 March 2022 and aired on 7 September 2023.

The series has received critical acclaim for its writing, acting, cinematography, themes, realism, and soundtrack, with favourable comparisons to other crime shows such as The Wire, Snowfall, and Power. It has received several awards and nominations from the British Academy Television Awards, including nominations for the British Academy Television Award for Best Mini-Series and Best Actor for Kane Robinson. In addition, it has won Drama Series, Best Original Music, Best Director: Fiction, Best Scripted Casting and Best Supporting Actress for Jasmine Jobson.