An ultrasonic transducer device includes a substrate on which a plurality of openings are arranged a plurality of ultrasonic transducer elements, each of the ultrasonic transducer elements being provided to each of the openings of the plurality of openings, on a first surface of the substrate and a member fixed to a second surface of the substrate, which is a surface on the opposite side of the first surface of the substrate. Provided to the member are a plurality of first groove sections, and a second groove section for bundling together the plurality of the first groove sections.
