There are provided a pressure sensor which can avoid an endoscope from causing intestinal perforation, an endoscope including the pressure sensor, and an endoscope device including the endoscope. There is provided a pressure sensor including a support unit and a pressure sensitive unit disposed on the ridge line of the front end of the support unit and configured to output a signal corresponding to an applied pressure. The pressure sensitive unit includes a first electrode disposed in a ring shape and multiple second electrodes opposed to the first electrode. The second electrodes are spaced in the circumferential direction of the first electrode.
