An ultrasound endoscope according to the invention includes: an ultrasound transducer that transmits/receives ultrasound； a housing in which the ultrasound transducer is fixed via an adhesive, and which houses the ultrasound transducer； an inner peripheral face forming a rectangular first opening portion for exposing the ultrasound transducer, the first opening portion being formed in the housing； an acoustic lens forming a part from an upper face to at least a side face of the ultrasound transducer； and a chamfered portion provided at a side face of the acoustic lens, an adhesive outlet port for the adhesive to flow to an outside from the first opening portion being formed between the chamfered portion and the inner peripheral face.
