See also: 1974 in television, other events of 1975, 1976 in television and the list of 'years in television'.
Events
- January 6 - Another World becomes the first American soap opera to start airing hour-long telecasts.
- March 1 - Color television transmissions begin in Australia.
- April 18 - Alice Cooper's first television special, Welcome To My Nightmare: The Making Of A Record Album airs.
- April 21 - Days of Our Lives becomes the second American soap opera to expand from thirty minutes to an hour in length.
- April 28 - Tom Snyder interviews John Lennon on The Tomorrow Show.
- May 24 - In the UK, Independent Television programs are blacked out by a strike.
- November 10 - The producers of the long-running serial drama The Guiding Light change the show's name to Guiding Light, in an attempt to modernize the show's image.
- December 1 - Top-rated As the World Turns, bowing to competition from NBC, expands to one hour in length.
- Fred Silverman becomes the head of ABC Entertainment. Initiating an era of what is disparagingly called "T&A" or "jiggle television", his programming choices result in ABC achieving ratings dominance.
- Sony introduces the Betamax video recorder in the US.
- Andy Kaufman makes his debut on Saturday Night Live, lip syncing portions of the theme to Mighty Mouse
Debuts
- January 6 - Wheel of Fortune premieres on NBC's daytime lineup (1975-1989).
- January 23 - Barney Miller debuts on ABC (1975-1982).
- January - The Sweeney premieres in the UK (1975-1978).
- October 11 - Saturday Night Live premieres with George Carlin hosting (1975-present).
- October - Space: 1999 premieres in the UK (1975-1977).
- November 3 - Good Morning America premieres with co-anchors David Hartman and Nancy Dussault (1975-present).
- Baretta premieres (1975-1978).
- Fawlty Towers premieres on the BBC (1975, 1979).
- the fifth estate debuts on CBC (1975-present).
- The Jeffersons, a spinoff of All in the Family, premieres on CBS (1975-1985).
- King of Kensington debuts on CBC (1975-1980).
- Match Game PM (1975-1981).
- One Day at a Time, produced by Norman Lear, premieres on CBS (1975-1984).
- Pop Quest premieres in the UK (1975-1978).
- Runaround premieres in the UK (1975-1981).
- Ryan's Hope premieres (1975-1989).
- Supersonic debuts in the UK (1975-1977).
- Superstars debuts on BBC1 in the UK (1975-1985, 2003-present).
- Welcome Back, Kotter premieres on ABC (1975-1979).
Television shows
- Meet the Press (1947-present)
- Candid Camera (1948-present)
- Truth or Consequences (1950-1988)
- Love of Life (1951-1980)
- Search for Tomorrow (1951-1986)
- American Bandstand (1952-1989)
- The Guiding Light (1952-present)
- The Today Show (1952-present)
- Panorama (UK) (1953-present)
- The Good Old Days (UK) (1953-1983)
- Face the Nation (1954-present)
- The Tonight Show (1954-present)
- Captain Kangaroo (1955-1984)
- Dixon of Dock Green (UK) (1955-1976)
- The Lawrence Welk Show (1955-1982)
- This Is Your Life (UK) (1955-2003)
- As the World Turns (1956-present)
- Opportunity Knocks (UK) (1956-1978)
- The Edge of Night (1956-1984)
- What the Papers Say (UK) (1956-present)
- The Sky at Night (UK) (1957-present)
- Blue Peter (UK) (1958-present)
- Grandstand (UK) (1958-present)
- Coronation Street (UK) (1960-present)
- The Mike Douglas Show (1961-1981)
- The Late Late Show (Ireland) (1962-present)
- Z-Cars (UK) (1962-1978)
- Doctor Who (UK) (1963-1989, 1996, 2005-present)
- General Hospital (1963-present)
- The Doctors (1963-1982)
- Another World (1964-1999)
- Crossroads (UK) (1964-1988, 2001-2003)
- Top of the Pops (UK) (1964-present)
- Days of Our Lives (1965-present)
- World of Sport (UK) (1965-1985)
- Play School (1966-present)
- The Carol Burnett Show (1967-1978)
- 60 Minutes (1968-present)
- Hawaii Five-O (1968-1980)
- Magpie (UK) (1968-1980)
- One Life to Live (1968-present)
- Hee Haw (1969-1993)
- Marcus Welby, M.D. (1969-1976)
- Sesame Street (1969-present)
- The Benny Hill Show (UK) (1969-1989)
- The Wonderful World of Disney (1969-1979)
- All My Children (1970-present)
- Mary Tyler Moore Show (1970-1977)
- McCloud (1970-1977)
- Monday Night Football (1970-present)
- Play for Today (UK) (1970-1984)
- All in the Family (1971-1979)
- Columbo (1971-1978)
- Masterpiece Theatre (1971-present)
- McMillan and Wife (1971-1977)
- Old Grey Whistle Test (UK) (1971-1987)
- Soul Train (1971-present)
- Are You Being Served? (UK) (1972-1985)
- Emmerdale Farm (UK) (1972-present)
- John Craven's Newsround (UK) (1972-present)
- Maude (1972-1978)
- M*A*S*H (1972-1983)
- Sanford and Son (1972-1977)
- The Bob Newhart Show (1972-1978)
- The Price Is Right (1972-present)
- The Waltons (1972-1981)
- Barnaby Jones (1973-1980)
- Kojak (1973-1978)
- Last of the Summer Wine (UK) (1973-present)
- Match Game '75 (1962-1969, 1973-1984, 1990-1991, 1998-1999)
- Schoolhouse Rock! (1973-1986)
- The Six Million Dollar Man (1973-1978)
- The Tomorrow Show (1973-1982)
- The Young and the Restless (1973-present)
- Chico and the Man (1974-1978)
- Derrick (1974-1998)
- Good Times (1974-1979)
- Happy Days (1974-1984)
- Land of the Lost (1974-1977)
- Little House on the Prairie (1974-1983)
- Rhoda (1974-1978)
- Tattletales (1974-1978, 1982-1984)
- The Dean Martin Celebrity Roast (1974-1984)
- The Rockford Files (1974-1980)
- Tiswas (UK) (1974-1982)
- Wish You Were Here...? (UK) (1974-present)
Ending this year
- Gunsmoke (1955-1975).
- Ironside (1967-1975).
- Mannix (1967-1975).
- The Odd Couple (1970-1975).
- Kung Fu (1972-1975).
Cancelled, but eventually to return to the air
- Jeopardy! (1964-1975, 1984-present).
Changes of network affiliation
- The Edge of Night moves from CBS to ABC