30 Is a Dangerous Age, Cynthia! poster
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30 Is a Dangerous Age, Cynthia!

5.419681h 25mNRMovieComedyRomance

A 29-year old aspiring composer—still single and without any romantic prospects—vows to both marry and write a hit musical before he turns 30. Director Joseph McGrath's 1968 British comedy stars Dudley Moore, Suzy Kendall, Eddie Foy Jr. and Patricia Routledge.

DirectorJoseph McGrath
WritersDudley Moore·Joseph McGrath
ProducerWalter Shenson

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30 Is a Dangerous Age, Cynthia! was released on March 4, 1968 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Joseph McGrath

DMDudley Moore
Dudley Moore
Rupert Street
EJEddie Foy Jr.
Eddie Foy Jr.
Oscar
SKSuzy Kendall
Suzy Kendall
Louise Hammond
JBJohn Bird
John Bird
Herbert Greenslade
DMDuncan Macrae
Duncan Macrae
Jock McCue
PRPatricia Routledge
Patricia Routledge
Mrs. Woolley
PB
Peter Bayliss
Victor
JW
John Wells
Honorable Gavin Hopton
HTHarry Towb
Harry Towb
Mr. Woolley
JR
Jonathan Routh
Captain Gore-Taylor
TJ
Ted Dicks Jr.
Horst Cohen
NHNicky Henson
Nicky Henson
Paul

More from Dudley Moore · Lead actor

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1994 · 10.0
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1992 · 9.5
One Pair of Eyes
One Pair of Eyes
1967 · 7.0
Foul Play
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1978 · 6.3
10
10
1979 · 5.8
Best Defense
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1984 · 4.3
When Things Were Rotten
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1975 · 7.3
Arthur
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1981 · 6.5
Oscar's Orchestra
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1995 · 6.0
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More from Eddie Foy Jr. · Co-star actor

Burke's Law
Burke's Law
1963 · 6.3
Navy Log
Navy Log
1955 · 5.2
Alfred Hitchcock Presents
Alfred Hitchcock Presents
1955 · 7.8
ABC Stage 67
ABC Stage 67
1966 · 6.8
Nanny and the Professor
Nanny and the Professor
1970 · 6.7
Legends
Legends
2006 · 5.0
Fair Exchange
Fair Exchange
1962 · 8.0
General Electric Theater
General Electric Theater
1953 · 6.8
Margie
Margie
1961 · 10.0
Yankee Doodle Dandy
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1942 · 7.0
See all fromEddie Foy Jr.

More from Joseph McGrath · Director

Casino Royale
Casino Royale
1967 · 5.2
Rising Damp
Rising Damp
1980 · 5.6
Zodiac
Zodiac
1974 · 5.0
The Magic Christian
The Magic Christian
1969 · 5.8
Girls Come First
Girls Come First
1975 · 3.2
The Bliss of Mrs. Blossom
The Bliss of Mrs. Blossom
1968 · 6.8
Digby, the Biggest Dog in the World
Digby, the Biggest Dog in the World
1973 · 4.8
Night Train to Murder
Night Train to Murder
1984 · 6.0
The Strange Case of the End of Civilization as We Know It
The Strange Case of the End of Civilization as We Know It
1977 · 6.3
I'm Not Feeling Myself Tonight
I'm Not Feeling Myself Tonight
1976 · 3.6
See all fromJoseph McGrath

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30 Is a Dangerous Age, Cynthia! — streaming FAQ

Which OTT platform streams 30 Is a Dangerous Age, Cynthia!?

30 Is a Dangerous Age, Cynthia! isn't streaming anywhere in Canada yet.

Is 30 Is a Dangerous Age, Cynthia! on Netflix?

No, 30 Is a Dangerous Age, Cynthia! is not on Netflix in Canada as of September 2026.

Is 30 Is a Dangerous Age, Cynthia! on Amazon Prime Video?

No, 30 Is a Dangerous Age, Cynthia! isn't on Amazon Prime Video in Canada right now.

Where can I watch 30 Is a Dangerous Age, Cynthia! for free?

30 Is a Dangerous Age, Cynthia! isn't streaming in Canada yet, so there's no way to watch it free at the moment.

What is the OTT release date for 30 Is a Dangerous Age, Cynthia!?

30 Is a Dangerous Age, Cynthia! hasn't started streaming in Canada yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around April 22, 1968. This is a prediction, not a confirmed date.