An ultrasound endoscope according to the invention includes: an ultrasound transducer section that transmits/receives ultrasound from a rectangular upper face； an acoustic lens that covers the upper face and side faces of the ultrasound transducer section so as to form a quadrangular prism shape, and includes a chamfered portion formed by at least one corner from among four corners of the quadrangular prism shape being cut off； a housing that is a casing housing the ultrasound transducer section and the acoustic lens, the housing including a rectangular first opening portion in which the acoustic lens of the quadrangular prism shape is fitted, and a second opening portion via which the cable is drawn out from an inside of the first opening portion, an adhesive outlet port being formed between the chamfered portion and a corner of the first opening portion, the adhesive outlet port being a gap from which an adhesive flows out； and an adhesive that is charged inside the housing and fills the adhesive outlet port.
