A drive device capable of suppressing the complication of the device configuration in order to realize a plurality of operation modes is provided.
A drive device includes a drive source, a first differential mechanism, a second differential mechanism, a switching mechanism, and a casing. The differential mechanism includes a first side gear connected to a left wheel, a first case connected to the drive source, and a second side gear. The second differential mechanism includes a third side gear connected to a right wheel, a second case, and a fourth side gear connected to the second side gear. The switching mechanism switches the casing, the first case, the second side gear, and the fourth side gear to a connection state and a non-connection state.