# 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.

## Schedule
### Monday-Friday

| Network | Network | 11:00 PM | 11:35 PM | 12:00 AM | 12:30 AM | 1:00 AM | 1:30 AM | 2:00 AM | 2:30 AM | 3:00 AM | 3:30 AM | 4:00 AM | 4:30 AM | 5:00 AM | 5:30 AM |
| ABC | ABC | Local Programming | Nightline | Jimmy Kimmel Live! (12:05) | Jimmy Kimmel Live! (12:05) | Local Programming | Local Programming | Local Programming | Local Programming | ABC World News Now | ABC World News Now | ABC World News Now | America This Morning | Local Programming | Local Programming |
| CBS | CBS | Local Programming | Late Show with David Letterman | Late Show with David Letterman | The Late Late Show with Craig Ferguson (12:35) | The Late Late Show with Craig Ferguson (12:35) | Local Programming | Local Programming | Local Programming | Up to the Minute | Up to the Minute | Up to the Minute | CBS Morning News | Local Programming | Local Programming |
| NBC | Fall | Local Programming | The Tonight Show with Conan O'Brien | The Tonight Show with Conan O'Brien | Late Night with Jimmy Fallon | Late Night with Jimmy Fallon | Last Call with Carson Daly | Poker After Dark | Poker After Dark | Late Night with Jimmy Fallon (R) | Late Night with Jimmy Fallon (R) | Local Programming | Early Today | Local Programming | Local Programming |
| NBC | Spring | Local Programming | The Tonight Show with Jay Leno | The Tonight Show with Jay Leno | | Late Night with Jimmy Fallon | Late Night with Jimmy Fallon | Last Call with Carson Daly | Poker After Dark | Poker After Dark | Late Night with Jimmy Fallon (R) | Late Night with Jimmy Fallon (R) | Local Programming | Early Today | Local Programming | Local Programming |
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.

### Saturday

| Network | Network | 11:00 PM | 11:30 PM | 12:00 AM | 12:30 AM | 1:00 AM | 1:30 AM | 2:00 AM | 2:30 AM | 3:00 AM | 3:30 AM | 4:00 AM | 4:30 AM | 5:00 AM | 5:30 AM |
| NBC | NBC | Local programming | Saturday Night Live | Saturday Night Live | Saturday Night Live | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) | Local programming (1:02) |
| Fox | Fall | The Wanda Sykes Show | The Wanda Sykes Show | Sit Down, Shut Up | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming |
| Fox | Spring | The Wanda Sykes Show | The Wanda Sykes Show | Brothers (R) | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming |
| Fox | Summer | Encore Programming | Encore Programming | Encore Programming | | | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming | Local Programming |