An ultrasonic endoscope (12) includes an elongated insertion section (22) and an operation section (24). The elongated insertion section (22) has a distal end and a proximal end. The operation section (24) is provided at the proximal end of the insertion section. The insertion section includes a distal end hard portion (32) having a distal end surface at the distal end, the distal end surface of the distal end hard portion including an ultrasonic transducer (42), a forceps channel opening portion (38a) and an object lens (44) on a straight line.