Abstract: A novel lawn sprinkler comprises a substantially flat base of molded plastic with a hollow plastic, inverted cup-shaped housing supported thereon. The cup-shaped housing has an inlet pipe molded integrally therewith with a fixed female threaded fitting for connection to a garden hose and opening tangentially into the interior thereof. The cup-shaped housing has cylindrical side walls and a flat top wall with curved peripheral internal top edge. The top wall has a central spray opening which is small at the inside and tapers outwardly at the top surface of the top wall. The cup-shaped housing fits into and is cemented in place in a groove molded in the upper surface of the flat base and has a projection which fits a recess in the base to orient the housing on said base.