A widower and aeronautical engineer named Steven Douglas raises three sons with the help of his father-in-law, and later the boys' great-uncle. An adopted son, a stepdaughter, wives, and another generation of sons join the loving family in later seasons.

Fred MacMurray
Steve Douglas

Don Grady
Robbie Douglas

Stanley Livingston
Chip Douglas

William Demarest
Charley O'Casey

Barry Livingston
Ernie Thompson

Tim Considine
Mike Douglas

William Frawley
Bub O'Casey

Tina Cole
Katie

Beverly Garland
Barbara
Father Knows Best66%
Up All Night60%
Suburgatory66%
The Jeffersons73%
American Housewife77%
All of Us71%
One Day at a Time67%
2Point4 Children73%
Yes, Dear68%
Duckman71%
Gary Unmarried59%
Last Man Standing72%
Tyler Perry's House of Payne75%
Mama's Family74%
Married... with Children77%
Life in Pieces71%
A Different World70%
The Honeymooners74%
King of the Hill74%