Tremblay-en-France (French pronunciation: [tʁɑ̃blɛ ɑ̃ fʁɑ̃s] , lit. 'Tremblay in France'; before 1989: Tremblay-lès-Gonesse, lit. 'Tremblay near Gonesse') is a commune in the north-eastern suburbs of Paris, France. It is located 19.5 km (12.1 mi) from the centre of Paris.
More than one-quarter of Charles de Gaulle Airport lies within the territory of the commune of Tremblay-en-France, in particular terminals 2A, 2B, 2C and 2D (the other terminals lie in the territory of other communes). It is the largest, by area, of the so-called petite couronne (inner ring) suburbs of Paris. The corporate head office of Air France and OEMServices lie within Tremblay.