Fundamentalism refers to a variety of religious, political and ideological philosophies or movements.

Fundamentalism or Fundamentalist may also refer to:

Religious positions Atheistic fundamentalism Christian fundamentalism Mormon fundamentalism Hindu fundamentalism Islamic fundamentalism Jewish fundamentalism

Other uses Fundamentalism (sculpture), a 2011 sculpture by Jens Galschiot Fundamentalist (album), a 2007 album by Russell Morris Market fundamentalism, an economic ideology Reasons fundamentalism, a philosophical theory