The 2006–07 network television schedule for the six major English language commercial broadcast networks in the United States covers the prime time hours from September 2006 through August 2007. The schedule is followed by a list per network of returning series, new series, and series cancelled after the 2005–06 season.

PBS is not included; member stations have local flexibility over most of their schedules and broadcast times for network shows may vary. Ion Television (renamed from its original rebrand, i: Independent Television, on January 27) is also not included since the network's schedule consisted mainly of syndicated reruns and movies.

The schedules include the four most popular networks (CBS, ABC, NBC, and Fox) and two new networks introduced as part of the broadcast TV realignment: The CW and MyNetworkTV.

New series are highlighted in bold.

All times are U.S. Eastern and Pacific Time (except for some live sports or events). Subtract for one hour for Central, Mountain, Alaska and Hawaii-Aleutian times.

Each of the 30 highest-rated shows is listed with its rank and rating as determined by Nielsen Media Research.^[1]

• Note: Drive premiered on Fox on April 16, 2007 at 8 p.m. and was removed from the schedule after airing two episodes.

• Note: Pirate Master aired at 10 p.m. ET on CBS on June 10 and 17, 2007 and was removed from the schedule after airing two episodes.
• Note: Fast Cars and Superstars: The Gillette Young Guns Celebrity Race aired at 8 p.m. ET on ABC on June 12 and 19, 2007.

NOTES: Fox premiered The Rich Li$t on November 1, 2006 at 9PM ET. Due to low ratings, the show was cancelled two days later.

ABC premiered The Great American Dream Vote at 8PM ET on March 28, 2007 (after airing the pilot the previous night). The show was cancelled on March 29, 2007.

Anchorwoman aired two back-to-back episodes on August 22, 2007 on Fox. The show was cancelled a few days later.

NOTES: In May 2006, when ABC announced their fall lineup for the 2006-2007 TV season, Big Day and Notes from the Underbelly was scheduled to air at 8PM and 8:30PM ET.^[2] However, due to both shows not getting "buzz" before their fall premieres, ABC moved Ugly Betty from its planned Friday night 8PM slot to the Thursday night 8PM ET slot. Big Day and Notes from the Underbelly aired later on in the season on different nights.

Fast Cars and Superstars debuted June 7 on ABC as a lead-in to coverage of the 2007 NBA Finals.

NOTE: In May 2006, when ABC announced their fall lineup for the 2006-2007 TV season, Big Day and Notes from the Underbelly was scheduled to air at 8PM and 8:30PM ET for Thursday nights and Ugly Betty at 8PM ET Friday nights time slot.^[2] However, before their fall premieres, ABC moved Ugly Betty from its planned Friday night 8PM slot to the Thursday night 8PM ET slot. The Friday night 8PM time slot was filled with the previous night's episode of Grey's Anatomy until December.