Martin Grotjahn(July 8, 1904 - September 30, 1990 ) was a German-born American psychoanalyst. He was the son of doctor Alfred Grotjahn and was born in Berlin, Germany. In 1937, he emigrated with his Jewish wife Etelka Grosz, daughter of doctor Gyula Grosz, and their one year old son to the United States. He became a very well known psychoanalyst and was one of the first to deal with the trauma of aging.