- Country: Sweden
- Genres: Comedy
- Release: 1947-09-17
- Director: Hasse Ekman
- Writers: Hasse Ekman
- Language: Swedish
- Stars: Eva Henning , Hasse Ekman , Sonja Wigert , Lauritz Falk , Olof Winnerstrand , Katie Rolfsen , Douglas Håge , Margit Andelius , Gunnar Björnstrand , Ulla Andreasson
- Runtime: 88 min
- Awards: N/A
- AKA: Ægtepar på vulkaner (Denmark) , A Bow-Tie Does Not Make a Summer , Liebesbarometer (Germany) , En fluga gör ingen sommar , One Swallow Does Not Make a Summer , En fluga gör ingen sommar (Sweden) , Ei yksi pääsky kesää tee (Finland)
- Plot: When Inga Brantemo goes on a business trip to Italy, her husband Bertil gets romantically involved with Christina Lovén, whose father is a book publisher. When Inga returns, Bertil has a difficult time trying to explain who the woman the neighbors saw in the Brantemo home was. Bertil is an author and it doesn't get easier when he and his wife gets invited to Christina's father to talk business.
- IMDB:tt0039354
One Swallow Does Not Make a Summer Cast · · · ALL
Hasse Ekman
Director
Eva Henning
Inga
Hasse Ekman
Bertil
Sonja Wigert
Chris
Lauritz Falk
Direktör Berger
Olof Winnerstrand
Bokförläggare Lovén
Gunnar Björnstrand
40-talisten
Katie Rolfsen
Douglas Håge
Margit Andelius
Ulla Andreasson
Gull Natorp
Astrid Bodin
Carl Ström
Sven Lindberg
Aurore Palmgren
Mary Rapp
Helga Brofeldt
Marianne Nielsen
Gunnar Nielsen
Agneta Prytz
Harry Sylvner
Harry Rydberg