The Champ de Mars (; ) is a large public greenspace in Paris, France, located in the seventh arrondissement, between the Eiffel Tower to the northwest and the École Militaire to the southeast. The park is named after the Campus Martius ("Mars Field") in Rome, a tribute to the Roman god of war. The name also alludes to the fact that the lawns here were formerly used as drilling and marching grounds by the French military.

Champ de Mars may refer to

• Champ de Mars, Paris
• Champ de Mars, Montreal
• Champ-de-Mars (Montreal Metro), a station on the Orange Line of the Montreal Metro rapid transit system
• Champ de Mars Racecourse, a race track in Port Louis, Mauritius
• Champ de Mars Massacre during the French Revolution

Le parc du Champ-de-Mars est un vaste jardin public, entièrement ouvert et situé à Paris dans le VII arrondissement, entre la tour Eiffel au nord-ouest et l'École militaire au sud-est. Riche d'une histoire bicentenaire, le Champ-de-Mars accueille les parisiens et les touristes toute l'année autour d'un vaste ensemble d'activités.

O Campo de Marte (em francês Champ de Mars) é uma das maiores áreas verdes em Paris, França, localizada no sétimo distrito (arrondissement), entre a Torre Eiffel a noroeste e a Escola Militar a sudeste.