- Source: Canton of Chaumont-en-Vexin
- Maucourt, Oise
- Réez-Fosse-Martin
- Margny-sur-Matz
- Le Plessier-sur-Saint-Just
- Monchy-Humières
- Gondreville, Oise
- Lamécourt
- Machemont
- Pontpoint
- Montépilloy
- Canton of Chaumont-en-Vexin
- Chaumont-en-Vexin
- Hardivillers-en-Vexin
- Boury-en-Vexin
- Arrondissement of Beauvais
- Montagny-en-Vexin
- Cantons of the Oise department
- La Corne-en-Vexin
- La Roche-Guyon
- Évreux
The canton of Chaumont-en-Vexin is an administrative division of the Oise department, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Chaumont-en-Vexin.
It consists of the following communes: