Silja Walter (23 April 1919 – 31 January 2011) was a Swiss author and Benedictine nun in the Fahr Abbey in Switzerland. Born as Cécile Walter in Rickenbach, Solothurn, in Switzerland, at the age of 30 she became a nun: her religious name was Maria Hedwig (OSB). Her brother, Otto F. Walter, was also a popular Swiss author.