Abstract: An endoscope includes an inserting section having a bending portion, an operating section provided to the inserting section, a bending operation device provided to the operating section, and an operation wire. One end of the operation wire is connected to the bending portion and the other end is connected to the bending operation device. The operation wire is manipulated to bend the bending portion by the bending operation device. The bending operation device includes a handle and a wound body. The handle has a first central axis and is turned around the first central axis. The wound body has a second central axis and is provided to the handle and is fixed to the operation wire. The second central axis of the wound body is provided to be eccentric with respect to the first central axis of the handle.