To provide a stationary marker buoy which stays at the dropped position to show its position even when the wind is strong above water, and the water flow is rapid and strong.

In the stationary marker buoy 30, a weight 1 is fixed to one end of a delivery rope 3, the other end of the delivery rope is fixed to a winding body, and the delivery rope is wound around the winding body. The winding body is rotatably and pivotably supported by a floating body part 7 afloat on a water surface, and a winding body rotation-stopping means 10 is provided on the floating body part. When the weight load is applied to the floating body part, the winding body rotation-stopping means is in a releasing state, and the delivery rope is delivered from the winding body. When any weight load is not applied to the floating body part, the winding body rotation-stopping means is in an operating state to stop the rotation of the winding body.