The 1974–75 network television schedule for the three major English language commercial broadcast networks in the United States covers primetime hours from September 1974 through August 1975. The schedule is followed by a list per network of returning series, new series, and series cancelled after the 1973–74 season.

PBS, the Public Broadcasting Service, was in operation, but the schedule was set by each local station.

This is the last of the four seasons to carry a 21-hour (three hours every day) weekly prime time schedule, which was used from 1971 to 1975.

New series are highlighted in bold.

All times are U.S. Eastern and Pacific Time (except for some live sports or events). Subtract 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: 60 Minutes aired at 6:00-7:00 pm on CBS from September 1974 to June 1975.

Note: Dan August consisted of reruns of the 1970-1971 ABC series.