2001–02 United States network television schedule (late night)

These are the late night schedules for the four United States broadcast networks that offer programming during this period, from September 2001 to August 2002.

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.

Note: Later aired its final episode as Later Presents SCTV on January 2, 2002, with Last Call with Carson Daly taking its place on January 8, 2002.

Note: Late Friday ended on May 24, 2002, with Last Call with Carson Daly expanding to five nights a week.