An endoscope includes: an insertion unit adapted to be inserted into a subject； an operating unit； a universal cable whose first end is connected to the operating unit； and an endoscope connector connected to a second end of the universal cable, and extending along a first axis. The endoscope connector includes: a non-waterproof type ultrasound connector provided in a first region, extending along a second axis perpendicular to a virtual plane including the first axis, and electrically connected to an ultrasound observation device； a suction duct ferrule provided in a second region, and configured to be connected to a suction device that suctions fluid inside the subject； and an air/water supply duct ferrule provided in the second region, and configured to be connected to an air/water supply device that supplies air or water to an observation window of the insertion unit.
