Fat Guy Stuck in Internet is an American science-fiction comedy television series created by John Gemberling and Curtis Gwinn for Cartoon Network's late-night adult-oriented programming block Adult Swim; and ended with a total of ten episodes.

An adaptation/remake of Gemberling and Gwinn's 2005 Channel 102 web series Gemberling, Fat Guy Stuck in Internet follows computer programmer Ken Gemberling – the titular "Fat Guy" – who is accidentally sucked into his computer and learns he is destined to save cyberspace from a variety of evils. After a pilot aired in May 2007, Adult Swim commissioned a full season of Fat Guy Stuck in Internet which lasted ten episodes, airing from June 2008 to August 2008. Following the run of its first season, the channel chose not to renew the show for a second, effectively cancelling the series.