An operation unit of an endoscope includes an insertion section that includes a bending portion, a plurality of operation wires configured to bend the bending portion, an operation lever that is provided on a freely tiltable operation section provided continuously to the insertion section, a wire pulling member swingably provided inside the operation section and having a plurality of arm portions, one end of the operation lever being coupled to the wire pulling member, a housing that is fixedly provided on the operation section, and that includes a through hole where the operation lever is arranged, a magnet that is provided on one of the housing and the other end portion of the operation lever, and a member on which attraction is generated by a magnetic force of the magnet, the member being provided on the other end portion of the operation lever or on the housing.