2009–10 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 time period, from September 2009 to August 2010. 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.

Legend
Light blue indicates Local programming.

Gray indicates encore programming.

Yellow indicates late night talk or variety shows.

Gold indicates network news programming.

Monday-Friday
Note: As the result of the Tonight Show conflict, O'Brien was let go at NBC, with his version of The Tonight Show ending on January 22, 2010. Jay Leno returned on March 1, 2010. O'Brien returned to late night in the Fall of 2010, with Conan airing on TBS.

ABC
Returning series
 * ABC World News Now
 * America This Morning
 * Jimmy Kimmel Live!
 * Nightline

CBS
Returning series
 * CBS Morning News
 * Late Show with David Letterman
 * The Late Late Show with Craig Ferguson
 * Up to the Minute

Fox
New series
 * Brothers (reruns)
 * Encore Programming
 * Sit Down, Shut Up
 * The Wanda Sykes Show

Not returning from 2008-09:
 * MADtv (revived by The CW in 2015-16)
 * Talkshow with Spike Feresten

NBC
Returning series
 * Early Today
 * Last Call with Carson Daly
 * Late Night with Jimmy Fallon
 * Poker After Dark
 * Saturday Night Live
 * The Tonight Show with Conan O'Brien
 * The Tonight Show with Jay Leno

Not returning from 2008-09:
 * Late Night with Conan O'Brien