Abstract: A removable cab assembly is provided for an all terrain vehicle which has front and rear racks, front and rear wheels provided with respective front and rear fenders and the seat located between the front and rear wheels. The cab assembly includes a front mounting bracket structure attached to a front rack of the all terrain vehicle, and a rear mounting bracket structure removably attached to a rear rack of the all terrain vehicle. A flexible framework has front ends connected to the front mounting bracket structure, and rear ends attached to the rear mounting bracket structure. The framework has a length such that when joined to the front and rear racks, the framework is bendable and assumes a generally semi-circular profile extending above the all terrain vehicle. A flexible fabric cover having longitudinal side edges, a front window and a rear window is removably connected to the framework and to the front and rear racks.