Arthur Duvernoix Houghton, or A.D. Houghton, (June 8, 1870 - January 23, 1938) was a medical doctor, a botanist specializing in cacti, a member of the Los Angeles, California, City Council from 1904 to 1906 and one of the founders of the American Legion. In his early years he was a showman who presented performances in hypnotism and conducted seances.