Debuts (including Scheduled)
| Date | Debut | Network |
|---|---|---|
| January 1 | In Justice | ABC |
| January 5 | Four Kings | NBC |
| January 6 | The Book of Daniel | NBC |
| January 8 | Campus Ladies | Oxygen |
| January 12 | Crumbs | ABC |
| January 14 | Ben 10 | Cartoon Network |
| January 17 | Love Monkey | CBS |
| January 22 | Number 1 Single | E! |
| January 23 | Courting Alex | CBS |
| January 27 | The Emperor's New School | the Disney Channel |
| February 2 | Survivor: Panama | CBS |
| February 24 | My Gym Partner's A Monkey | Cartoon Network |
| March 1 | Free Ride | FOX |
| March 3 | Conviction | NBC |
| March 7 | The Unit | CBS |
| March 12 | Big Love | HBO |
| March 15 | The Loop | FOX |
| March 22 | Heist | NBC |
| March 24 | Hannah Montana | Disney Channel. |
| March 28 | Thief | FX |
| Teachers | NBC. | |
| April 2 | So NoTORIous | VH1 |
| April 3 | Yo Momma | MTV |
| April 9 | Just for Kicks | Nickelodeon |
| April 15 | Eureka seveN | Adult Swim |
| April 24 | La Fea Más Bella | Univision |
| May 5 | Mickey Mouse Clubhouse | Disney Channel |
| May 31 | The Hills | MTV |
| June 2 | Beyond the Break | The N |
| June 6 | The Janice Dickinson Modeling Agency | Oxygen |
| June 12 | Saved | TNT |
| June 13 | ECW | SciFi |
| June 17 | Spider Riders | Kids' WB! |
| July 7 | Psych | USA Network |
| August 6 | Metalocalypse | Cartoon Network and Adult Swim |
| August 21 | Vanished | Fox |
| August 28 | Wow! Wow! Wubbzy! | Nickelodeon and Nick Jr. |
| August 30 | Justice | Fox |
| September 2 | ESPN on ABC | |
| September | 30 Days Til I'm Famous | Fox |
| September | Legion of Super Heroes | The CW |
| September 5 | Desire | MyNetworkTV |
| Secrets | MyNetworkTV | |
| Standoff | Fox | |
| September 7 | 'Til Death | Fox |
| Happy Hour | Fox | |
| September 8 | Pucca | Jetix |
| September 9 | Bleach | Adult Swim |
| Trinity Blood | Adult Swim | |
| September 10 | NBC Sunday Night Football | NBC |
| September 11 | Monday Night Football | ESPN |
| Judge Maria Lopez | first-run syndication | |
| September 12 | Greg Behrendt | first-run syndication |
| September 15 | Men in Trees | ABC |
| September 18 | Studio 60 on the Sunset Strip | NBC |
| Rachael Ray | first-run syndication | |
| The Megan Mullally Show | first-run syndication | |
| "The Class" | CBS | |
| September 19 | Smith | NBC |
| September 20 | Kidnapped | on NBC |
| Jericho | CBS | |
| September 21 | Six Degrees | ABC |
| September 23 | Tom and Jerry Tales | Kids' WB! |
| Monster Allergy | Kids' WB! | |
| Shaggy & Scooby-Doo Get a Clue! | Kids' WB! | |
| Legion of Super Heroes | Kids' WB! | |
| September 24 | Brothers & Sisters | ABC |
| September 25 | Heroes | NBC |
| Runaway | The CW | |
| September 26 | Help Me Help You | ABC |
| Smith | CBS | |
| September 28 | Ugly Betty | ABC |
| October 1 | Dexter | Showtime |
| The Game | The CW | |
| October 2 | The Duel (Real World/Road Rules Challenge) | MTV |
| October 4 | The Nine | ABC |
| October 11 | 30 Rock | NBC |
| October 17 | The Knights of Prosperity | ABC |
| November | Class of 3000 | Cartoon Network |
| December | The Lost Room | Sci-Fi channel |
| Autumn | Haversham Hall | Disney Channel. |
| American Idol Rewind | first-run syndication | |
| Aquaman | The CW | |
| Fantastic Four | Cartoon Network. | |
| Winter | The Black Donnellys | NBC |
| Notes from the Underbelly | ABC | |
| Big Day | ABC | |
| Unknown. | 'Til Death Do Us Part | Court TV |
| Unknown. | Perfect Disaster (mini-series) | Discovery Channel |
| Unknown | In Case of Emergency | ABC |
Read more about this topic: 2006 In American Television