List of Famous people who died in 1966

Mathilde Friederike Karoline Ludendorff was a German psychiatrist. She was a leading figure in the Völkisch movement known for her esoteric and conspiratorial ideas. Her third husband was General Erich Ludendorff. Together with Ludendorff, she founded the Bund für Gotteserkenntnis (in German), a small and rather obscure esoterical society of theists, which was banned from 1961 to 1977.

Joel Stebbins was an American astronomer who pioneered photoelectric photometry in astronomy. He was director of the University of Illinois Observatory from 1903 to 1922 where he performed innovative work with the selenium cell. In 1922 he became director of the Washburn Observatory at the University of Wisconsin–Madison where he remained until 1948. After 1948, Stebbins continued his research at Lick Observatory until his final retirement in 1958.