Debuts
- January 4 – Sea Hunt premieres in syndication (1958–1961).
- June 19 - Jack Wyatt's Confession premieres on ABC (1958–1959).
- August 25 – Concentration premieres on NBC (1958–1973).
- September 22 – Peter Gunn premieres on NBC (1958–1961).
- September 24 – The Donna Reed Show premieres on ABC (1958–1966).
- September 30 – The Rifleman premieres on ABC (1958–1963).
- October 2 – The Huckleberry Hound Show premieres, Hanna Barbera's second television series (1958–1962).
- October 5 - Lawman premieres on ABC (1958–1962).
- October 5 - Encounter, an anthology series originating from Toronto, Canada, began a five-week run on ABC, having been cancelled after the November 2 episode.
- October 8 – Bat Masterson premieres on NBC (1958–1961).
- October 10 – 77 Sunset Strip premieres on ABC (1958–1964).
- October 10 – Grandstand (UK) debuts on BBC Television (1958–2007).
- October 16 – Blue Peter (UK), the world's longest-running children's TV programme, debuts on BBC Television (1958–present).
- October 17 - An Evening With Fred Astaire on NBC; first show prerecorded on color videotape, wins nine Emmy Awards.
- December 22 – Quatermass and the Pit (UK) premieres on BBC Television (1958–1959).
- Don Messer's Jubilee premieres (1958–1969).
- The Friendly Giant premieres (1958–1985).
- Your Life in Their Hands (UK) premieres on BBC Television (1958–1964 and many revivals).
Read more about this topic: 1958 In Television