Harold Dearden (13 December 1882 – 6 July 1962) was a British psychiatrist and screenwriter.

At the Battle of the Somme he was wounded, suffering from a lost eye and shell shock.

[1][2][3] During World War II, Dearden worked as a psychiatrist and was principal interrogator at Camp 020.

In his book Devilish But True: The Doctor Looks at Spiritualism (1936), he compared cases of witchcraft to spiritualist mediums.

[5] Dearden attended séances and was a judge for a group formed by the Sunday Chronicle to investigate the materialization medium Harold Evans.