An endoscope apparatus includes an endoscope and an apparatus body. The endoscope includes at least an elongated insertion section having flexibility and an image pickup device, the insertion section including, at a distal end portion, an observation window forming an observation optical system and an illumination window forming an illumination optical system and the image pickup device including an image pickup surface on which an optical image passing through the observation window is formed. The apparatus body incorporates a display section that displays an image picked up by the image pickup device. The apparatus body has a flat rectangular parallelepiped shape, includes the display section on one surface having a largest area of the apparatus body, and includes a holding member that holds the insertion section on a rear surface of the one surface in a wound state.