I Lost My Heart in Heidelberg (German: Ich hab' mein Herz in Heidelberg verloren) is a 1952 West German romantic musical film directed by Ernst Neubach and starring Eva Probst, Adrian Hoven and Paul Hörbiger. The film takes its title from the popular song I Lost My Heart in Heidelberg, whose lyrics Neubach had co-written in the 1920s. It was part of a strong trend towards heimatfilm productions set in romanticised Southern Germany, Austria or Switzerland. It premiered in Heidelberg on 29 October 1952.