The 1990–91 daytime network television schedule for the four major English-language commercial broadcast networks in the United States covers the weekday and weekend daytime hours from September 1990 to August 1991.

• New series are highlighted in bold.

• All times correspond to U.S. Eastern and Pacific Time scheduling (except for some live sports or events). Except where affiliates slot certain programs outside their network-dictated timeslots, subtract one hour for Central, Mountain, Alaska, and Hawaii-Aleutian times.
• Local schedules may differ, as affiliates have the option to pre-empt or delay network programs. Such scheduling may be limited to preemptions caused by local or national breaking news or weather coverage (which may force stations to tape delay certain programs in overnight timeslots or defer them to a co-operated station or digital subchannel in their regular timeslot) and any major sports events scheduled to air in a weekday timeslot (mainly during major holidays). Stations may air shows at other times at their preference.

• 1990-91 United States network television schedule (prime-time)
• 1990-91 United States network television schedule (late night)

• https://web.archive.org/web/20071015122215/http://curtalliaume.com/abc_day.doc
• https://web.archive.org/web/20071015122235/http://curtalliaume.com/cbs_day.doc
• https://web.archive.org/web/20071012211242/http://curtalliaume.com/nbc_day.doc