A seat suspension interposed between a vehicle body and a seat, the seat suspension comprising: a seat support member attached to a seat side, the seat support member disposed via a rolling absorption mechanism on a vehicle body side attachment member attached to a vehicle body side, wherein the rolling absorption mechanism has link mechanisms provided between the vehicle body side attachment member and the seat support member, and supporting the seat support member in a displaceable manner in a vehicle width direction relative to the vehicle body side attachment member; characterized in that the link mechanisms each comprise a first link, a second link and a third link, wherein the first link and the vehicle body side attachment member are coupled at a first coupling point wherein the second link and the first link are coupled at a second coupling point wherein the third link and the second link are coupled at a third coupling point between the second coupling point and a fifth coupling point and the third link and the vehicle body side attachment member are coupled at a fourth coupling point; wherein the second link and the seat support member are coupled at the fifth coupling point; and wherein the first link is disposed to extend in the substantially lateral direction in an upper position adjacent to the vehicle body side attachment member, the third link is disposed in a lower position of the first link and the second link is disposed between the first link and the third link and the seat support member so that the second coupling point of the first link can move in an arc shape in a vertical direction about the first coupling point and the fifth coupling point can move in an arc shape in a vehicle width direction about a second coupling point being a fulcrum of swaying for the vehicle width direction, whereby when rolling is generated, the fifth coupling point is moved in the arc shape in the vehicle width direction while the second coupling point, as the fulcrum of swaying for the vehicle width direction, is moved in the arc shape in the vertical direction. a seat support member attached to a seat side, the seat support member disposed via a rolling absorption mechanism on a vehicle body side attachment member attached to a vehicle body side, wherein the rolling absorption mechanism has link mechanisms provided between the vehicle body side attachment member and the seat support member, and supporting the seat support member in a displaceable manner in a vehicle width direction relative to the vehicle body side attachment member; characterized in that the link mechanisms each comprise a first link, a second link and a third link, wherein the first link and the vehicle body side attachment member are coupled at a first coupling point wherein the second link and the first link are coupled at a second coupling point wherein the third link and the second link are coupled at a third coupling point between the second coupling point and a fifth coupling point and the third link and the vehicle body side attachment member are coupled at a fourth coupling point; wherein the second link and the seat support member are coupled at the fifth coupling point; and wherein the first link is disposed to extend in the substantially lateral direction in an upper position adjacent to the vehicle body side attachment member, the third link is disposed in a lower position of the first link and the second link is disposed between the first link and the third link and the seat support member so that the second coupling point of the first link can move in an arc shape in a vertical direction about the first coupling point and the fifth coupling point can move in an arc shape in a vehicle width direction about a second coupling point being a fulcrum of swaying for the vehicle width direction, whereby when rolling is generated, the fifth coupling point is moved in the arc shape in the vehicle width direction while the second coupling point, as the fulcrum of swaying for the vehicle width direction, is moved in the arc shape in the vertical direction.