Abstract: A golf ball washer includes a housing having interior walls defining an interior cavity and a cylindrical lip defining an access opening. The cylindrical lip has exterior threads. Abrasive ball cleaning medium lines the interior walls of the interior cavity. A plunger is disposed within the interior cavity of the housing. The plunger has a first end and a second end. The plunger is movable between an extended position and a retracted position. In the extended position the first end of the plunger telescopically extends from the access opening of the housing. In the retracted position the plunger is confined within the housing. The plunger has a golf ball receiving aperture extending therethrough. The golf ball receiving aperture protrudes from the access opening when the plunger is in the extended position, such that a golf ball can be inserted in the golf ball receiving aperture. A top cap is rotatably mounted to the first end of the plunger. The top cap has a depending annular skirt with interior threads.