Transmission with integrated brake particularly but not exclusively usable for vehicles. The transmission includes, in an oil bath inside a containment and support casing (10), an epicyclic reduction unit (14) which is kinematically connectable to a drive unit by means of at least two gears (16,17), of which the driven one (17) is axially fixed, is coaxial to a sun gear (19) of the reduction unit and is associated therewith by means of a splined coupling. A disk brake (33) is arranged between the epicyclic reduction unit and the driven gear and has at least one first disk (34) rigidly coupled to an internally toothed ring gear (18) which is rigidly coupled to the containment casing and at least one second disk (35) which is rigidly coupled so as to rotate together with the driven gear. The disk brake is associated with axially movable packing pushers (39).