John Henry Mackay (6 February 1864 – 16 May 1933) was an individualist anarchist, thinker and writer. Born in Scotland and raised in Germany, Mackay was the author of Die Anarchisten (The Anarchists, 1891) and Der Freiheitsucher (The Searcher for Freedom, 1921). Mackay was published in the United States in his friend Benjamin Tucker's magazine, Liberty.
