- HD 1080
- Runtime: 109m.
- Status: Released
- 1
- Languages: sv
- Country: Sweden
- Director: Ingmar Bergman
- Stars: Gunnar Björnstrand, Ulla Jacobsson, Eva Dahlbeck, Harriet Andersson, Margit Carlqvist
- keywords: country house, ex-lover, lawyer, mistress, extramarital affair, 1900s, unconsummated marriage
- Production_studio: SF Studios
- Slogan: A Sexy Frolic About the Sport of Love
- providers: Criterion Channel
- The Smiles of a Summer Night is featured in the top rankings of 1955
- #3 in Top Comedy Movies of 1955
- #3 in Top Romance Movies of 1955
Early in the 20th century, middle-aged lawyer Fredrik Egerman and his young wife, Anne, have still not consummated their marriage, while Fredrik's son finds himself increasingly attracted to his new stepmother. To make matters worse, Fredrik's old flame Desiree makes a public bet that she can seduce him at a romantic weekend retreat where four couples convene, swapping partners and pairing off in unexpected ways.