Abstract: A door stop assembly adapted for introduction into the space between the lower edge of a door and the adjacent floor surface. It has a wedge shaped block whose top surface and bottom surface are oriented toward each other at an acute angle. A flat strip of spring steel has a top leg and a bottom leg that are bent back upon each other in an acute angle. The bottom leg is secured to the bottom surface of the wedge shaped block. The too leg of the spring has a slightly concave curvature that spaces its bottom surface from the top surface of the wedge shaped lock so that any pressure applied to the top surface of the top leg member adjacent its front end will transfer all that pressure directly to the rear edge of the top leg member and force it downwardly against the top surface of the wedge shaped block. There is also structure secured to the bottom surface of the wedge shaped block for preventing it from sliding with respect to a support surface upon which it would be placed adjacent the bottom edge of a door.