Maressa Orzack

Maressa Hecht Orzack (February 5, 1924 – November 10, 2010) was an American psychologist who was clinical associate in psychology at McLean Hospital; Coordinator of Behavior Therapy Affective Disease Program, also at McLean Hospital and assistant clinical professor of psychology, Department of Psychiatry at Harvard Medical School. She also held private practice at Newton Centre.

Orzack's research included various forms of computer addiction, including Internet addiction and computer game addiction. Recently, her research has focused on the addictive nature of MMORPG games.