Abstract: A portable desk for a laptop computer or similar device. The desk has a rigid panel with a central cutout. Pads are provided on the top surface to receive the computer case to provide friction. Cushions on the underside of the panel engage and stabilize the desk on the user's legs in a sitting position. A mouse pad is hinged to the desk and in a stored position is received in the center cutout and may be deployed to a position adjacent the desk when in use. Heat is dissipated through the central cutout and also along air troughs between the bottom of the case and upper surface of the desk. In one embodiment, the desk may be provided with folding legs which may be deployed to impart an inclination to the working surface. The desk is compact, lightweight and can be conveniently stored in a carrying case alongside the computer when not in use.