La Chanson du Dimanche is a French musical group founded in 2007. In the tradition of the French chansonniers, their concept is to broadcast a new song every Sunday.

Formed by Clément Marchand (guitar & vocals) and Alexandre Castagnetti "Alec" (keyboard & vocals), their songs use many different musical styles (zouk, disco, folk, chanson) and deal with daily themes, politics, ecology, people, to name a few. They usually inspire a lot of positive energy and good mood ("bonne humeur" was their very first song).

Initially a mere funny experiment, they became quite popular in France through the video-sharing and social networks web sites, and particularly through their song "Petit cheminot" during a strike in December 2007.