JMW Views 7 meanings found JMW is encountered as an abbreviation for the famous painter J.M.W. Turner, as well as for a variety of names in business, regional wilderness designations, music festivals, and boxing weight classes. Community Japan Music Week Joseph Mallord William (painter) International Joods Maatschappelijk Werk Jüdisches Museum Wien Regional John Muir Wilderness Business John M. Williams Sports Junior Middleweight