Thronecast is a British television series which aired on Sky Atlantic between 2011 and 2019. From the fifth series onwards, the show was presented by Sue Perkins and Jamie East. It is an aftershow to Game of Thrones, which also aired on the channel in the United Kingdom. Each episode varied between 10 minutes and 60 minutes in length and featured interviews with cast and crew members, interaction with the audience through social media, and analysis of the episode, along with a preview of the next episode of Game of Thrones. It was the only official aftershow for the series until HBO aired After the Thrones in 2016, providing an aftershow to the show's sixth series until it was cancelled after ten episodes.Thronecast was originally devised by executive producers Ruby Thomas, Ben Boyer and Koink Productions Ltd for Sky Digital Entertainment. The series began airing online in April 2011 as a series of 10-minute podcasts presented by Geoff Lloyd to correspond with the first series of Game of Thrones. Annabel Port joined Geoff for the second series, which corresponded with the broadcast of the second series of Game of Thrones. For the third series, Thronecast became a 15-minute on-air show that was broadcast on Sky Atlantic following each episode of the third series of Game of Thrones, and featured new guest presenter Grace Dent. The fourth series was presented by Jamie East and Rachel Parris, and was 30 minutes long. The fifth series was presented by Sue Perkins and Jamie East and was 30 minutes long, except for the series finale which was an extended hour long special. Perkins and East continued to present the seventh and eighth series of the show which were all 60 minutes long with the exception of the final episode of the show, which was 70 minutes. Series 7 and 8 included pre-series episodes titled War Room, and the eighth series also included a 90 minutes long gameshow titled Gameshow of Thrones and a 30-minute pre-finale episode titled Thronecast: The End is Coming.

Each series was also made available on Sky Go, On Demand (previously Sky Anytime and Sky Anytime+) and NOW TV. Series 1 to 4 of Thronecast were produced by Koink Productions Ltd for Sky Atlantic. Series 5 of Thronecast was produced by CPL Productions for Sky Atlantic. Series 6 and 7 of the show were produced by Sky's in-house production company, Sky Vision Productions. Series 8 of the show was produced by independent production company Znak & Co Ltd.