She Thought It Was Him (Swedish: Hon trodde det var han) is a 1943 Swedish comedy crime film directed by Per-Axel Branner and starring Edvin Adolphson, Anne-Margrethe Björlin and Naemi Briese.

The film's sets wered designed by the art director Bertil Duroj.

The publisher of a famous author pressure him to write in a more popular genre such as a crime.

When he returns to his apartment he discovers a burglar with an uncanny likeness to himself.

They agree to switch places to that the author can more accurately study crime at first end.