|List of years in American television:|
|List of 2021 American television debuts|
|2020–21 United States network television schedule|
|2021–22 United States network television schedule|
|List of American television programs currently in production|
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.