An impact absorbing member able to absorb the energy at the time of impact using a smaller space is provided. The impact absorbing member 10 comprises a sheet member 12 having bent parts 12a and a plurality of sheet parts 12b connected through the bent parts 12a and a restraining member 14 restraining the plurality of sheet parts 12b, the plurality of sheet parts 12b being superposed in a state folded back at the bent parts 12a in a first direction, the restraining member 14 restraining the superposed plurality of sheet parts 12b from both sides in a second direction, the first direction being a direction connecting one end part 12c among two end parts 12c of the sheet member 12 and the bent part 12a adjoining the sheet part at which the end part 12c is positioned, the second direction being a direction perpendicular to the first direction.