This is a list of television series cancelled before airing an episode. While many television shows are produced as pilots that never air on television or in any medium, the scope of this article is to list shows that were officially announced to be broadcast, but then canceled prior to the scheduled debut on the original network. Shows are listed in alphabetical order with the slated year of debut (plus timeframe, or specific premiere date, where applicable), known cast and plot information, the reason for cancellation (if known), and what happened to the series after cancellation.