Summer Interlude, originally titled Illicit Interlude in the United States, is a 1951 Swedish drama film co-written and directed by Ingmar Bergman. The film opened to highly positive reviews from critics.

Gunnar Fischer was a Swedish cinematographer who worked with director Ingmar Bergman on several of the director's best-known films, including Smiles of a Summer Night (1955) and The Seventh Seal (1957). In addition to his career as cinematographer, Gunnar Fischer directed short films, wrote screenplays (1933–41) and published books for children.