Peter Douglas Molyneux OBE (born 5 May 1959 in Guildford, Surrey, UK) is an English computer game designer and game programmer. He is responsible for well known God games Dungeon Keeper, Populous, and Black & White, among others, as well as business simulation games such as Theme Park and more recently, hit adventure role playing games Fable and Fable 2. In August 1997, Molyneux left Bullfrog Productions to establish a new development team, Lionhead Studios.

Molyneux was inducted into the AIAS Hall of Fame in 2004 and was honoured with an OBE in the New Year's Honours list announced on 31 December 2004. He was awarded the title of Chevalier de l'Ordre des Arts et des Lettres by the French government in March 2007. Lauded as one of the world's most brilliant and inventive game developers, Molyneux has nevertheless acquired a reputation for issuing over-enthusiastic descriptions of games under development, which are found to be somewhat less ambitious when released.

The most well-known case of this was with the game Fable, released in 2004 without many of the features talked about by Molyneux in press interviews during development. After the release, Molyneux publicly apologized for overhyping the game. His role has also changed from designer and developer to more of a publicist and executive producer role.

Though credited in part for lending his name to several recent projects, Molyneux is in fact not the principal designer of Fable, The Movies, or Black & White 2. On 6 April 2006, Lionhead Studios was bought by Microsoft and now forms part of the Microsoft Game Studios. At E3 2006, Peter Molyneux gave several interviews in the press, in one of which he stated that "I think you're going to see a lot more fantastic games from Lionhead because of that relationship [with Microsoft]." In July 2007, he was awarded an honorary degree of Doctor of Science by the University of Southampton.

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