An object of the present invention is to provide a cam clutch that allows easy switching of operating modes with a simple structure and a small force. The cam clutch includes a first biasing means (150) that biases plural cams (136) disposed between coaxial and relatively rotatable inner race (110) and outer race (120) to rotate in an engaging direction, and a second biasing means (155) that biases the cams to rotate in a disengaging direction with a different biasing force than that of the first biasing means (150). The above object is achieved by a switching means (170) configured to switch operating modes by changing a larger one of biasing forces applied to the same cam by the first biasing means (150) and the second biasing means (155) to become relatively smaller than the other of the biasing forces.