Champagne-sur-Oise () is a railway station in the commune of Champagne-sur-Oise, Val-d'Oise department, France.
It is served by Transilien Line H on two of its branches : Creil â PersanBeaumont â Pontoise and Paris-Nord â ErmontEaubonne â PersanBeaumont. In 2019, the station's estimated annual passenger total was 342,276.