Abstract: A mouse cradle that provides a computer user with the optimal position for operating a computer mouse. The mouse cradle allows for ergonomic placement of the mouse near the thigh of the user by attaching the mouse cradle to the user's chair. The present mouse cradle can be used on chairs with, and without, arm-rests. A vertical support allows for height adjustment and rotation in one plane, and a horizontal support allows for sideways adjustment and rotation in a second plane. A planar surface on top of the vertical support provides an operating area for the mouse, and the planar surface can be angled by the user to an optimal position.