The following is the 2002–03 network television schedule for the six major English language commercial broadcast networks in the United States. The schedule covers primetime hours from September 2002 through June 2003. The schedule is followed by a list per network of returning series, new series, and series cancelled after the 2001–02 season. All times are Eastern and Pacific, with certain exceptions, such as Monday Night Football.

New series are highlighted in bold.

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

  Yellow indicates the programs in the top 10 for the season.

  Cyan indicates the programs in the top 20 for the season.

  Magenta indicates the programs in the top 30 for the season.

Other Legend

•   Light blue indicates local programming.
•   Gray indicates encore programming.
•   Blue-gray indicates news programming.
•   Light green indicates sporting events.
•   Light Purple indicates movies.
•   Red indicates series being burned off and other scheduled programs, including specials.

PBS is not included; member stations have local flexibility over most of their schedules and broadcast times for network shows may vary.

NOTE: Fox was to have aired Oliver Beene and The Grubbs on Sundays at 7:30 p.m. and 9:30 p.m., respectively, but instead made last-minute changes by postponing Oliver Beene to the following spring and canceling The Grubbs. In their places, King of the Hill and reruns of Malcolm in the Middle were slotted.

NOTE: Grounded for Life was also originally scheduled to run on Tuesdays at 8:30 p.m. on Fox, but it was pulled after two new episodes in September, and one in early December. The show moved to The WB in the spring in 2003.

NOTE: Movies, baseball games, reruns, and specials comprised most of the programming Thursday nights on Fox. Septuplets was supposed to air at 9-10, but it was cancelled at the last minute.