As of July 2026, My Three Sons Season 9 aired in 1968 with 28 episodes — streaming now on Philo. Full episode guide and where to watch below.
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My Three Sons Season 9

1968 28 Episodes Comedy · Family ⭐ 7/10

Right now you can watch My Three Sons Season 9 on — and it is funnier than its reputation suggests. The show says what it needs to say in a single season, no filler. Its 7/10 TMDB score, built from 40 ratings, reflects a title that consistently delivers. Fred MacMurray's performance alone is worth the time investment. Available now — press play and find out why people keep recommending it.

My Three Sons Season 9 is not trying to be everything to everyone, and that focus is exactly what makes it work. My Three Sons Season 9 does what great comedies rarely manage — it is actually funny, consistently, across the whole run. Season 9 of My Three Sons includes 28 episodes. It aired from September 1968 to April 1969. This season stars Fred MacMurray, Don Grady and Stanley Livingston. Fred MacMurray and Don Grady lead a cast that brings real weight to the material. It was aired in 1968. What keeps My Three Sons Season 9 from feeling disposable is a cast that clearly understands the material better than the format usually demands. It knows exactly what it is, and does not try to be anything else.

My Three Sons Season 9 is the kind of thing you put on in the background and end up fully watching. It stands on its own even without an obvious comparison point. A contained run means every episode is doing real work. Fred MacMurray sets the tone, but the supporting cast is where a lot of the best moments come from. A reliable pick for any night you want quality comedy without the homework.

📡 Where to Watch My Three Sons Season 9

🇺🇸 United States
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🎬 My Three Sons Season 9 — Episode Guide

E1
The Great Pregnancy
1968-09-28
While the family is doing some spring cleaning, Katie faints behind the couch. Soon her mother's intuition brings her to the house and she announces that Katie is going to be a mother. Once it is confirmed by a doctor, the family dotes on Katie, but seems to ignore the father to be.
E2
Dr. Osborne, M.D.
1968-10-05
Controversy erupts in the Douglas household over the selection of a doctor for Katie during her pregnancy. While Robbie and Katie want to choose their own doctor, Katie's mother insists on making an appointment with the Miller family doctor. Meanwhile, Steve stands in for an absent Robbie at his fi...
E3
Life Begins in Katie
1968-10-12
The baby stirs inside Katie and Robbie feels its movement and suddenly sheds his youthful ways to become very much the sober and altogether too serious expectant father. Meanwhile, fatherhood is taking a different approach when Tramp's puppies to the next door neighbor's dog Francis, are about to b...
E4
The Grandfathers
1968-10-19
Because he is about to become a Grandfather, Steve has an easier time working out an important Air Force contract with a hard-shelled General. By watching the way Katie walks, the General predicts that she will have a baby boy. Meanwhile Ernie decides to run for class President at school.
E5
The Baby Nurse
1968-10-26
When Robbie and Katie announce that they might hire a baby nurse, Uncle Charley is confident they will ask him. When they don't, he embarks on a marathon of baby sitting so he can learn the ropes by hiring himself out as a professional baby sitter.
E6
Big Ol' Katie
1968-11-09
In an advanced stage of pregnancy, Katie suffers qualms about her looks that are as out of proportion as her figure. She is temporarily distressed by her hugeness until she learns from her doctor that she is going to have more than one baby.
E7
My Three Grandsons
1968-11-16
The day -- or rather the night -- of the big event finds expectant mother Katie quite calm, and Steve and Uncle Charley quite the opposite, and a hapless father to be off on Army manouvres. At the hospital, Katie gives birth to identical triplet boys and Steve must adjust to the fact that he is a G...
E8
Tea for Three
1968-11-23
As the triplets come home from the hospital their names are announced by the happy parents: Robbie Jr, Charley and Steve II. Their father Robbie finds that he is totally unprepared for all of the attention that the infants attract.
E9
Back to Earth
1968-11-30
It may not be poker, but nine in the Douglas family is a full house. Feeling somewhat responsible, Robbie decides to quit school in order to pursue work full time and find a new home for his family. A wise school counsellor takes steps to discourage the move. Meanwhile Steve designs some plans for ...
E10
First Night Out
1968-12-07
Robbie and Katie have been invited to a High School reunion and they are reluctant to leave their babies with an unknown sitter as everyone in the family is otherwise busy. They hire a professional sitter that is recommended by the family doctor.
E11
Cassanova O'Casey
1968-12-14
On the rebound after his girlfriend Sally suddenly marries another younger man, Uncle Charley acquires many new lady friends when Katie schemes to put the wind back in the lovable old windbag's sails.
E12
Expendable Katie
1968-12-21
With three babies to look after, Dr. Osborne says Katie is completely exhausted and he prescribes a couple of days bed rest. She flies to Santa Barbara to be with her mother. While she is away the family must hire three cleaning ladies to restore the house back to normal.
E13
The New Room
1968-12-28
The contractor that Steve hires to add a baby alcove to Robbie and Katie's room leaves much to be desired. He displays all the charm of a top sergeant and is putty in Katie's hands, but is exasperatingly gruff and non co-operative to the males in the Douglas home.
E14
The Fountain of Youth
1969-01-04
Steve meets an attractive widow who seems to be very interested in him but suddenly she turns cool towards his intentions. The family does its best to give the impression that Steve isn't really as old as he seems.
E15
Three's a Crowd
1969-01-11
Although Katie confidently calls the look-alike triplets by name, other members of the family doubt her accuracy, and when Steve helpfully bathes them, she admits that she can no longer tell them apart because he washed off the inkdots put on their feet. They must be taken back to the hospital for p...
E16
Chip and Debbie
1969-01-18
Chip and his girlfriend announce to a startled Douglas family that they plan to marry and continue high school. Disapproving, Steve visits the girl's parents but they decide not to forbid the marriage but wait for further developments. When Katie becomes ill and Robbie takes her to the doctor, Chip...
E17
What Did You Do Today, Grandpa?
1969-01-25
The Douglases feel that Steve is becoming sedentary, not knowing that he's just been assigned to help capture some enemy agents, but things get rough when he's taken to a Greenwich Village cocktail party where the spies start shooting when they find him hiding in the bathtub.
E18
Chip on Wheels
1969-02-01
Steve Douglas gives Chip a well-preserved second hand car for his 16th birthday but he is astounded by his son's unenthusiastic reaction; he is embarrassed to drive it, and parks it a long way from school so he won't be recognized as the old car's owner.
E19
Honorable Expectant Grandfather
1969-02-08
Steve's old Chinese friend transfers to Los Angeles and happily renews his friendship with the Douglases. He confides in Steve and Charley that he is concerned about the man his daughter has married - an aparently aimless hippie with long hair.
E20
The Other Woman
1969-02-15
Chip and Ernie observe their married older brother, Robbie, in the company of a glamorous woman. The boys report the upsetting situation to their father Steve, who assures them he has trust in Robbie and urges them to maintain confidence in their older brother too.

🎭 Cast of My Three Sons Season 9

Fred MacMurray
Fred MacMurray
Steve Douglas
Don Grady
Don Grady
Robbie Douglas
Stanley Livingston
Stanley Livingston
Chip Douglas
Barry Livingston
Barry Livingston
Ernie Thompson
William Demarest
William Demarest
Charley O'Casey
Tina Cole
Tina Cole
Katie

📋 All Seasons of My Three Sons

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