2021 in American television  The following is a list of events affecting American television in 2021. Events listed include television show debuts, finales, and cancellations; channel launches, closures, and re-brandings; stations changing or adding their network affiliations; and information about controversies and carriage disputes. These shows are scheduled to premiere in 2021. The premieres date may be changed depending on a variety of factors. These television films and specials are scheduled to premiere in 2021. The premiere dates may be changed depending on a variety of factors. The following shows will return with new episodes after being canceled or ended their run previously: