An intraocular lens insertion tool is presented. An introductory part in an insertion cylinder is provided, at a widthwise central portion of a bottom surface, with a central protrusion which extends in an axial direction of a tool body and protrudes toward an upper surface to get in contact with a center portion of a rear surface of an optical zone of an intraocular lens. The upper surface is provided, at its both widthwise ends, with a pair of lateral protrusions, which extend in the axial direction of the tool body and protrude toward the bottom surface to get in contact with both ends of a front surface of the optical zone of the intraocular lens. A lens pressing face of a plunging member is formed with a dimension spanning from the bottom surface to the upper surface at a tip end section of the insertion cylinder.
