CANCELLATION MECHANISM

Provided is a simple cancellation mechanism achieving the size reduction and the reduced number of components. This cancellation mechanism includes body portions 21, 23 attached to a rotatable spindle and connected to an automatic transmission via the spindle; a rotary lever 22 attached to the body portions 21, 23 to rotate about the spindle and configured to rotate in response to input from a shift lever device; and an actuator 24 disposed on one of the rotary lever 22 and the body portions 21, 23 and configured to move between a coupling position at which the rotary lever 22 and the body portions 21, 23 are coupled together and a decoupling position at which coupling between the rotary lever 22 and each body portion 21, 23 is canceled.