Les Ondes Silencieuses (English: The Still Waters) is the third full-length album by French electronica artist Colleen (real name Cécile Schott) released on 21 May 2007.

Her penchant for unusual instrumentation was again evident, with the spinet and viola da gamba making appearances alongside the more familiar classical guitar and clarinet.

The use of the viola da gamba was inspired by a 15-year-old Schott viewing Tous les matins du monde, a French film (adapted from a novel of the same name) based on the life of Marin Marais who played the instrument.

The looped aesthetic that had characterised much of Colleen's earlier work was discarded on this release in favour of a more open-ended and unstructured approach.

"Unfold Out" and "Serpentine" were recorded live in Asahi Art Square, Tokyo.