Debuts
- January 4 – Last of the Summer Wine pilot episode, first series begins on November 12 (1973–present).
- January 6 – Schoolhouse Rock! premieres on ABC (1973–1986).
- January 28 – Barnaby Jones premieres on CBS (1973–1980).
- March 20 – Police Story premieres on NBC (1973–1978)
- March 26 – The Young and the Restless premieres on CBS (1973–present).
- March 26 – The $10,000 Pyramid premieres on CBS with Dick Clark as host.
- April 6 – Ultraman Taro premieres on TBS in Japan (1973–1974).
- July 2 – CBS revives Match Game with more ribald questions. (1962–1969, 1973–1984, 1990–1991, 1998–1999).
- July 17 – The Wizard of Odds, first United States game show hosted by Alex Trebek, premieres on NBC.
- The New Treasure Hunt (syndicated 1973–1976)
- September 8 – An animated revival of Star Trek premieres on NBC (1973–1974). Super Friends (1973–1974) premieres on ABC.
- September 14 – Adam's Rib premieres on ABC (1973–1973)
- September 22 – The Starlost premieres (1973–1974).
- October 15 – The Tomorrow Show premieres on NBC (1973–1982).
- October 20 – The Six Million Dollar Man on ABC (1973–1978).
- October 24 – Kojak premieres on CBS (1973–1978, 2005).
- Superstars debuts on BBC1 in the UK (1973–1985, 2003–2005).
- Greatest Sports Legends (syndicated 1973–1993).
Read more about this topic: 1973 In Television