Operation device

An operation device, comprising:

• an operation knob that is operable by a pull-up operation and a push-down operation about a shaft and comprises a front-end operation region on a front-end side far from the shaft and a rear-end operation region on a rear end side close to the shaft;
• a contact detection unit to detect contact of a user with the front-end operation region and the rear-end operation region;
• an operation detection unit to detect the pull-up operation and the push-down operation performed on the operation knob;
• and
• a determination unit that determines an operation performed by combining contact with the front-end operation region and the rear-end operation region detected by the contact detection unit and the pull-up operation and the push-down operation detected by the operation detection unit, and also determines that at least an operation performed on the rear-end operation region is invalid when contact with the front-end operation region and the rear-end operation region is detected.