Sleeper Cell is an American one-hour drama on the Showtime network that began airing on December 4, 2005. The tagline for the first season was "Friends. Neighbors. Husbands. Terrorists." and the tagline for the second season was "Cities. Suburbs. Airports. Targets." The series was nominated for an Emmy award for Outstanding Miniseries. The eight-episode second season of the series, titled Sleeper Cell: American Terror, premiered on December 10, 2006. Both seasons of Sleeper Cell were originally aired in an unusual fashion, by filming the entire season ahead of time and then airing the episodes on consecutive nights, such that each brand new season was aired for the first time over a period of less than two weeks. In Australia, both seasons originally aired on the Showtime Australia channel in 2006/2007. Re-runs as of 2008 have screened on the showcase channel (part of the Showtime Australia group of channels).

As extra material on the first season DVDs reveal, the show was originally named The Cell.