1999–2000 United States network television schedule (late night)

This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "1999–2000 United States network television schedule" late night – news · newspapers · books · scholar · JSTOR (December 2018) (Learn how and when to remove this message)

These are the late night schedules for the four United States broadcast networks that offer programming during this time period, from September 1999 to August 2000. All times are Eastern or Pacific. Affiliates will fill non-network schedule with local, syndicated, or paid programming. Affiliates also have the option to preempt or delay network programming at their discretion.