| Actor | Fred MacMurray (as Steve Douglas), Tim Considine (as Mike Douglas (1960–1965)), Don Grady (as Robbie Douglas (1960–1971)), Stanley Livingston (as Richard "Chip" Douglas), William Frawley (as Michael Francis "Bub" O'Casey), William Demarest (as Uncle Charley O'Casey), Barry Livingston (as Ernie Thompson Douglas (1963–1972)), Meredith MacRae (as Sally Ann Morrison Douglas (1963–1965)) |
| Actress | Tina Cole (as Katie Miller Douglas (1967–1972)), Beverly Garland (as Barbara Harper Douglas (1969–1972)), Dawn Lyn (as Dorothy "Dodie" Harper Douglas (1969–1972)), Ronne Troup (as Polly Williams Douglas (1970–1972)) |
| Broadcaster (1960–1965) | American Broadcasting Company (ABC) |
| Broadcaster (1965–1972) | CBS |
| Executive Producer | Don Fedderson |
| Production Company | Don Fedderson Productions |
| Production Company (1960–1965) | Gregg-Don, Inc. |
| Production Company (1960–1965) | MCA TV |
| Production Company (1965–1972) | CBS Productions |
| Links | https://en.wikipedia.org/wiki/My_Three_Sons · https://www.imdb.com/title/tt0053525/?ref_=fn_al_tt_1 |
Added by MissBabyGirl