The following is the 1988–89 network television schedule for the four major English language commercial broadcast networks in the United States. The schedule covers primetime hours from September 1988 through August 1989. The schedule is followed by a of returning series, new series, and series cancelled after the 1987–88 season. All times are Eastern and Pacific, with certain exceptions, such as Monday Night Football. PBS is not included; member stations have local flexibility over most of their schedules and broadcast times for network shows may vary. New series are highlighted in bold.