Abstract: The adjustable leg supported mouse pad designed to enable a user to use a mouse input device directly over his or her upper leg or thigh while sitting. The leg supported mouse pad includes a saddle structure capable of engaging the user's thigh and horizontally aligning a planar mouse pad attached thereto over the user's thigh. The saddle structure includes a rectangular shaped flexible panel with two five-sided support members attached to the top surface thereon on opposite sides of the flexible panel's transverse axis. When the flexible panel is disposed transversely over the user's upper leg while sitting, the support members are repositioned so that their medial planar surfaces are oriented in a substantially horizontal position. The support members are spaced apart on the flexible panel so that a mouse pad maybe supported on two support member's medial planar surfaces.