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Chatou (French: [ʃatu]) is a commune in the Yvelines department in the Île-de-France region in north-central France. Chatou is a part of the affluent suburbs of western Paris and is on the northwest side of the Seine river about 14 km (9 mi) from the city's center.

The canton of Chatou is an administrative division of the Yvelines department, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Chatou.It consists of the following communes:ChatouCroissy-sur-SeineMarly-le-RoiLe Port-MarlyLe Vésinet