# 2008–09 United States network television schedule (late night)

The 2008–09 network late night television schedule for the four major English-language commercial broadcast networks in the United States cover the late night hours from September 2008 to August 2009. The schedule is followed by a list per network of returning series, new series, and series canceled after the 2007-08 television season.

## 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 p.m. | 11:35 p.m. | 12:00 a.m. | 12:30 a.m. | 1:00 a.m. | 1:30 a.m. | 2:00 a.m. | 2:30 a.m. | 3:00 a.m. | 3:30 a.m. | 4:00 a.m. | 4:30 a.m. | 5:00 a.m. | 5:30 a.m. |
| ABC | ABC | Local programming | Nightline | Jimmy Kimmel Live! (12:05 p.m.) | Jimmy Kimmel Live! (12:05 p.m.) | Local programming | Local programming | ABC World News Now | ABC World News Now | ABC World News Now | ABC World News Now | ABC World News Now | ABC World News Now | America This Morning | America This Morning |
| CBS | CBS | Local programming | Late Show with David Letterman | Late Show with David Letterman | The Late Late Show with Craig Ferguson (12:35 p.m.) | The Late Late Show with Craig Ferguson (12:35 p.m.) | Local programming | Up to the Minute | Up to the Minute | Up to the Minute | Up to the Minute | Up to the Minute | Up to the Minute | CBS Morning News | CBS Morning News |
| NBC | Fall | Local programming | The Tonight Show with Jay Leno | The Tonight Show with Jay Leno | Late Night with Conan O'Brien | Late Night with Conan O'Brien | Last Call with Carson Daly | Poker After Dark | Poker After Dark | The Tonight Show with Jay Leno (R) | The Tonight Show with Jay Leno (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 |
| NBC | Summer | 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 |
Note: The Tonight Show with Jay Leno ended its first run on May 29, 2009, with The Tonight Show with Conan O'Brien premiering on June 1, 2009.
Note: Late Night with Conan O'Brien ended on February 20, 2009, with Late Night with Jimmy Fallon premiering on March 2, 2009.

### Saturday

| Network | 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. |
| Fox | Fall | MADtv | MADtv | Talkshow with Spike Feresten | Local programming | Local programming | Local programming | Local programming |
| Fox | Winter | Talkshow with Spike Feresten | Talkshow with Spike Feresten | MADtv (R) | Local programming | Local programming | Local programming | Local programming |
| Fox | Spring | MADtv | MADtv | Talkshow with Spike Feresten | Talkshow with Spike Feresten | Local programming | Local programming | Local programming | Local programming | Local programming | Local programming |
| 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) |