The 1990–91 network television schedule for the four major English language commercial broadcast networks in the United States covers primetime hours from September 1990 through August 1991.
PBS is not included; member stations have local flexibility over most of their schedules and broadcast times for network shows may vary.
Each of the 30 highest-rated shows is listed with its rank and rating as determined by Nielsen Media Research.
[1] Note: On CBS, Face to Face with Connie Chung was to have aired 10-11 p.m., but it was replaced by The Trials of Rosie O'Neill at the last minute due to Connie Chung's personal health commitments.
[2] Note: Top Cops aired at 10:00 PM on CBS from July to October 1990.