Choisy-le-Roi (French pronunciation: [ʃwazi lə ʁwa] ⓘ) is a commune in the Val-de-Marne department, in the southeastern suburbs of Paris, Île-de-France.

Choisy-le-Roi is located 10.7 km (6.6 mi) southeast from the center of Paris, on both banks of the river Seine.

The neighbouring communes are, from the north and clockwise: Vitry-sur-Seine, Alfortville, Créteil, Valenton, Villeneuve-Saint-Georges, Orly and Thiais.

The average annual rainfall is 607.2 mm (23.91 in) with December as the wettest month.

Choisy-le-Roi is served by Choisy-le-Roi station on Paris RER line C. It is also served by Créteil-Pompadour station on Paris RER line D. Public schools include:[6] There is a private school serving elementary to senior high school, groupe scolaire Saint André Choisy-le-Roi.