An ultrasound endoscope includes an insertion portion that is inserted into a subject, an ultrasound transducer portion that is arranged at a distal end portion of the insertion portion and includes an ultrasound transmitting and receiving surface for transmitting and receiving ultrasound, a first balloon groove that is a groove formed between the insertion portion and the ultrasound transducer portion and is for locking a balloon that covers the ultrasound transmitting and receiving, a distal end face that is arranged on a distal end side with respect to the ultrasound transducer portion and is disposed spaced apart from the ultrasound transmitting and receiving surface, and a convex portion that is provided on the distal end face and on which stress concentrates when a finger is slid on the distal end face.
