This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "2011–12 United States network television schedule" late night – news · newspapers · books · scholar · JSTOR (March 2012)

The 2011-12 network late-night television schedule for the four major English-language commercial broadcast networks in the United States covers the late night hours from September 2011 to August 2012. The schedule is followed by a list per network of returning series, new series, and series canceled after the 2010-11 television season.

PBS is not included, as member television stations have local flexibility over most of their schedules and broadcast times for network shows may vary, Ion Television is not included since the network schedules feature syndicated reruns, also not included are MyNetworkTV and The CW (as the programming services do not offer late night programs of any kind).

Fox is not included on the weekday schedule as Fox airs late night network programming only on Saturdays.