Dr Archibald Keightley (1859–1930) was a prominent member of the Theosophical Society who helped in the editing of Helena P. Blavatsky's magnum opus, The Secret Doctrine. He served as the General Secretary of the English Theosophical Society from 1888 to 1890. He was married to Julia van der Planck a.k.a. "Jasper Niemand", the author of a number of Theosophical tracts. His nephew Bertram Keightley was also a Theosophist.