1970–71 United States network television schedule (late night)

These are the late night schedules on all three networks for each calendar season beginning September 1970. All times are Eastern/Pacific.

PBS (which launched on October 5, 1970) is not included, as member television stations have local flexibility over most of their schedules and broadcast times for network shows may vary, CBS and ABC are not included on the weekend schedules (as the networks do not offer late night programs of any kind on weekends).

Talk/Variety shows are highlighted in yellow, Local News & Programs are highlighted in white.

Monday-Friday

-	11:00 PM	11:30 PM	12:00 AM	12:30 AM	1:00 AM	1:30 AM	2:00 AM	2:30 AM	3:00 AM	3:30 AM	4:00 AM	4:30 AM	5:00 AM	5:30 AM
ABC	Local programming	The Dick Cavett Show			Local programming or sign-off
CBS	Local programming	The Merv Griffin Show			Local programming or sign-off
NBC	Local programming	The Tonight Show Starring Johnny Carson			Local programming or sign-off

Saturday/Sunday

-	11:00 PM	11:30 PM	12:00 AM	12:30 AM	1:00 AM	1:30 AM	2:00 AM	2:30 AM	3:00 AM	3:30 AM	4:00 AM	4:30 AM	5:00 AM	5:30 AM
NBC	Local programming	The Weekend Tonight Show			Local programming or sign-off

By network

ABC

Returning Series

• The Dick Cavett Show

Not returning from 1969-70

• The Joey Bishop Show

CBS

Returning Series

• The Merv Griffin Show

NBC

Returning Series

• The Tonight Show Starring Johnny Carson
• The Weekend Tonight Show