2023–24 United States network television schedule (late night)

The 2023–24 network late night television schedule for the major English-language commercial broadcast networks in the United States covers the late night hours from September 2023 to August 2024.
PBS is not included at all, as its member television stations have local flexibility over most of their schedules and broadcast times for network shows may vary. (PBS does offer its member stations packages of Amanpour & Company and BBC World News to air in late night timeslots Monday–Friday, and optional overnight access to its satellite feed, which rebroadcasts prime time programs shown either the previous evening or earlier in the week.) Ion Television is not included since the network's late-night schedule consists of syndicated drama reruns and paid programming, nor are MyNetworkTV and The CW as neither programming service offer late night programs of any kind.
Fox is not included in the weekday schedule, as it only airs late night network programming on Saturdays, and ABC and CBS are not included in the weekend schedule as both networks only air late night network programming on weekdays (except overruns of primetime programming due to sports). NBC is not included on Sundays as it does not offer any network late night programming on Sundays year-round (outside of overruns of its prime time Sunday Night Football game telecasts into the late night time period during Fall). 
== Schedule ==
* New series are highlighted in bold.
* Repeat airings or same-day rebroadcasts are indicated by (R).
* 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, and fill timeslots not allocated to network programs with local, syndicated, or paid programming at their discretion. 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 a digital subchannel in their regular timeslot) and any overrunning major sports events scheduled to air in a weekday timeslot (mainly during major holidays). Stations may air shows at other times at their preference.
* All sporting events air live in all time zones in correspondence to U.S. Eastern Time with local and/or network late night programming after game completion.
=== Weekday late nights ===
Network	 	11:00 p.m. 	11:30 p.m. 	12:00 a.m. 	12:30 a.m. 	1:00 a.m. 	1:30 a.m.
ABC 	ABC 	Local programming 	Jimmy Kimmel Live! (11:35) 	Jimmy Kimmel Live! (11:35) 	Nightline (12:37) 	Local programming (1:07) 	Local programming (1:07)
ABN 	ABN 	Late Show with Vince Laverly	Late Show with Vince Laverly 	The Midnight Show with Bruce Simms 	The Midnight Show with Bruce Simms 	The Dave Callahan Show 	The Dave Callahan Show
CBS 	Fall 	Local programming 	The Late Show with Stephen Colbert (11:35) 	The Late Show with Stephen Colbert (11:35) 	Comics Unleashed with Byron Allen (12:37)	Comics Unleashed with Byron Allen (12:37)	Local programming (1:37)
CBS 	Winter 	Local programming 	The Late Show with Stephen Colbert (11:35) 	The Late Show with Stephen Colbert (11:35) 	After Midnight (12:37) 	After Midnight (12:37) 	Local programming (1:37)
Central	Central	Local programming 	Last Week Tonight with John Oliver (11:35) 	Last Week Tonight with John Oliver (11:35) 	Not in Bed with Tony Perkins (12:35) 	Not in Bed with Tony Perkins (12:35) 	Local programming (1:37)
DuMont 	DuMont 	Local programming 	The Ellen Cleghorne Show 	The Ellen Cleghorne Show 	Red Eye 	Red Eye 	Local programming (1:37)
Horizon	Horizon	Horizon Locals (O&Os): Horizon News Local
Affiliates: Local programming	The Problem with Jon Stewart (11:35) 	The Problem with Jon Stewart (11:35) 	Bee Honest with Samantha (12:35) 	Bee Honest with Samantha (12:35) 	Local programming (1:37)
NBC 	NBC 	Local programming 	The Tonight Show Starring Jimmy Fallon (11:35)	The Tonight Show Starring Jimmy Fallon (11:35)	Late Night with Seth Meyers (12:37) 	Late Night with Seth Meyers (12:37) 	Local programming (1:37)
Pi 	Pi 	Local programming 	Talk with Jen Taylor (11:24) 	Talk with Jen Taylor (11:24) 	Talk with Jen Taylor (11:24) 	Mocker Shocker (R) (12:17) 	Local programming (1:37)
The WB 	The WB 	The Craig Kilborn Show 	The Craig Kilborn Show 	The Eric Andre Show 	The Eric Andre Show 	Local Programming 	Local Programming
XYZ 	XYZ 	XYZ Late Night 	XYZ Late Night 	XYZ Late Night 	XYZ Late Night 	Local Programming 	Local Programming
Note:
* ABC, CBS, Central and NBC affiliates offer their rebroadcasts of the network evening newscasts to accommodate local scheduling in selecting markets that do not offer encores of the local late news; some stations that air encores of their local late newscasts will air the rebroadcast alongside the network evening news rebroadcasts (either acting as a lead-in to the networks' overnight newscasts), or with syndicated and time-lease programs.