Karin Lesch is a Swiss-German stage, cinema, and television actress, of Swiss-Austrian extraction; who hails from a multi-generational family of accomplished German-speaking performers of theatre and cinema. Lesch was born in Zürich, the daughter of Swiss director, dramatist, and author Walter Lesch (1892–1958), and the Austrian actress Mathilde Danegger (1903–1988). In addition to both of her parents having professional careers in the German-speaking dramatic arts, Lesch comes from a family of Austrian entertainers of music, stage, and cinema. On her maternal side, her grandfather was the Austrian character-actor and director Josef Danegger, Snr (1866-1933), and her maternal grandmother Bertha Müller (1866-1938) was an Austrian actress of both stage and silent-film. Her uncle Josef Danneger, Jnr, (1889–1948) was an Austrian actor of stage and cinema, whilst her uncle Theodor Danegger (1891–1959) was both an opera singer and recording artist in addition to being an actor of stage and cinema, having performed in both musicals and operettas, as well as in purely dramatic rôles.