Sibylle Blanc (born January 3, 1974 in Aubonne, Vaud) is a French-speaking Swiss actress, writer and director who is actively involved in theatrical, film, television and radio productions in her native Switzerland as well as in nearby France.

Blanc studied dramatic arts at the Ecole Supérieure d'Art Dramatique (ESAD) in Geneva graduating in 1996. Her first major role came with the TSR produced sitcom (in French) Bigoudi where she played Laura for 50 episodes from 1996 to 1998. Since that time she has frequently appeared on television programs produced by the French-language Swiss national TV station, TSR.

She has a tremendous ability to play a diverse range of roles which was brought out in her portrayal of the various female characters in Matt Cameron's play Ruby Moon which she has performed in. In the musical Irma la Douce she was able to display her strong talent for singing and dancing.

Since turning 40 she has earned her bachelor's degree in Linguistics and Psychology and her master's degree in Speech Therapy at the University of Geneva. She also announced at a showing of the film "Sam" in 2015 that she was working on a script for a future film.