Marj Dusay (born Marjorie Ellen Pivonka Mahoney) was an American actress known for her roles on American soap operas. She was especially known for her role as Alexandra Spaulding on Guiding Light, a role she played on and off from 1993 through the show's 2009 cancellation, as well as playing the wife of Douglas MacArthur in the 1977 movie MacArthur.