A nozzle mounting assembly for an in-ground swimming pool cleaning system may comprise a plurality of mounting rings that are formed within the shell of a prefabricated swimming pool. The plurality of mounting rings may couple at a first end with a corresponding plurality of trim rings. The plurality of trim rings forms a flanged ring around each of the openings in the pool surface for cleaning nozzle mechanisms. The plurality of mounting rings may further couple with a corresponding plurality of nozzle retainer bodies, where the nozzle retainer bodies provide an interface for standard cleaning system fittings. Nozzle mounting assemblies may be adapted to a variety of pool types and surfaces, and may be sized for the floor surface, the steps or the walls of a swimming pool.