Carré Marigny, Urban park in the Champs-Élysées gardens, Paris, France

Carré Marigny is a green area situated between Avenue de Marigny and Avenue Matignon in central Paris, featuring benches and walking paths. The space has an open, welcoming layout designed for visitors to rest and spend time outdoors.

The square is named after Abel-François Poisson, marquis de Marigny, Director of Buildings for Louis XV and brother of Madame de Pompadour. After open-air stamp trading was evicted from the Palais-Royal in 1864 and from the Luxembourg Garden shortly after, a wealthy collector donated the space to Paris for this purpose. The market has been held here since then.

The square serves as a gathering place for stamp enthusiasts who come on Thursdays, Saturdays, and Sundays to buy and sell collections. This weekly routine has shaped how locals and visitors experience the space.

The market sits between Avenue Gabriel and Avenue Matignon, behind the Théâtre Marigny; licensed dealers trade under tents along Avenue Gabriel, while unlicensed sellers line Avenue Matignon without cover. The nearest metro stops are Champs-Élysées-Clemenceau and Franklin D. Roosevelt, served by lines 1, 9 and 13.

Since about 1990, pin collectors claimed the square's benches, away from the stamp stalls, and for a time every collectible pin category could be found there. Stamp dealers complained, and a crackdown expelled the pin vendors and the unlicensed "wet feet" sellers.