Bigna grew up as one of three girls in eastern Switzerland. After a carefree youth, she trained as a teacher and then taught in St. Gallen. After two years of professional experience, she couldn't let go of her passion and decided to turn her hobby into a profession.

Bigna moved to Munich, where she trained as an actress. After qualifying for the stage, Bigna was engaged at the Metropoltheater in Munich, later moved to Basel to join the theatre company and spent a summer at the Winterthur Summer Theatre. Bigna toured Switzerland with the successful play "Traumfrau Mutter" and has been a member of the Hagenwil Castle Festival ensemble since 2011, where she plays one of the leading female roles every year.

In 2017, Bigna was awarded the Culture Prize of the city of Wil, which honours her for her cultural work. Also in 2017, Bigna won the Schlossfestspiele "Die goldene Glocke" recognition award for the role of Dr Mathilde von Zahnd in Dürrenmatt's Physikern.


Bigna Körner has appeared in several film and television productions at home and abroad. These include productions such as«Friedas Fall», "Der Bestatter", "Zwiespalt", "Verdacht", "Mord hinterm Vorhang", "Der Capelli Code" with Iris Berben and Klaus Maria Brandauer, as well as series such as "Das Bloghaus", "Die Wache", "Um Himmels Willen" and "Wilder Kaiser".

In addition to her work as an actress, she also works as a director and theatre teacher. 

As a mother of two, she lives with her husband and family back in eastern Switzerland.