An endoscope includes an insertion portion to be inserted into a subject and is capable of allowing a treatment tool to protrude from a distal end of the insertion portion. The endoscope further includes a treatment tool elevator base, an operating portion, a wire, and an operation transmission mechanism. The treatment tool elevator base is supported by a rotation shaft arranged at a distal end portion of the insertion portion and is elevated by rotation around the rotation shaft with respect to a direction in which the insertion portion extends. The operating portion is arranged on a proximal end side of the insertion portion and inputs operation of changing an angle of elevating the treatment tool with respect to the treatment tool elevator base. The wire is connected to the operating portion and is arranged along the direction in which the insertion portion extends. The operation transmission mechanism includes a wire connection portion to be connected to the wire and transmits the operation to the treatment tool elevator base. The wire connection portion is positioned on a side opposite to an elevation side on which the treatment tool is elevated with respect to a reference plane including the direction in which the insertion portion extends and a direction along an axis of the rotation shaft. With this configuration, it is possible to realize an endoscope capable of enhancing cleaning efficiency without enlarging the distal end portion of the endoscope and without deteriorating users operational feeling.
