Circle Studio was a video game developer located in Derby, United Kingdom.
The company was founded in October 2003 by a group of former employees at Core Design, a studio owned by Eidos Interactive. The founding employees of the new company, led by Jeremy Heath-Smith and Adrian Smith, had a significant role in the Tomb Raider series, which was Core Design's best known creation.
In 2005, Circle Studio finished working on a title called Without Warning, a third-person shooter for the PlayStation 2 and Xbox. It was published by Capcom. The game was generally poorly received, and after releasing it, Circle Studio began making and publishing DVD games rather than video games.
The company was liquidated in February 2007, after having released a total of 9 DVD games and 1 video game.