An ultrasound probe includes: a drive motor of an outer rotor type； an ultrasound element configured to transmit ultrasound waves, and receive ultrasound waves； and a rotary transformer configured to transfer a signal of the ultrasound element in a non-contact manner, the rotary transformer being disposed at an end of the drive motor, wherein the drive motor includes: a stator including a stator core and a motor coil； and a rotor including a rotor core and a motor magnet, the ultrasound element is attached to the rotor, the rotary transformer includes a secondary transformer disposed on the rotor, and a primary transformer disposed on the opposite side from the secondary transformer, the prmary transformer and the secondary transformer each include a transformer core, and a transformer coil disposed on the transformer core, and at least one of the primary transformer and the secondary transformer includes a coil holding portion.
