Naturalism may refer to: Realism (arts), naturalism in the arts Naturalism (literature), a literary movement beginning in the late 19th century Naturalism (theatre), a movement in European drama and theatre Naturalism (philosophy), the idea that only natural laws and forces operate in the universe Naturalism (horse) (1988–2018), a racehorse See also Naturalness (disambiguation) Naturism (disambiguation) Natural history, a domain of inquiry involving organisms Naturalist, a person who studies natural history Naturalistic fallacy, the mistake of explaining something as being good reductively, in terms of natural properties Naturalistic observation, a research methodology Critical naturalism, an idea of Roy Bhaskar Ethical naturalism, or moral naturalism or naturalistic cognitivistic definism Humanistic naturalism, a branch of philosophical naturalism Liberal naturalism, a heterodox form of philosophical naturalism Metaphysical naturalism, a philosophical basis for science Poetic naturalism, an approach of Sean M. Carroll Political naturalism, a belief that there is a natural law Religious naturalism, combines a naturalist worldview with ideals associated with many religions Sociological naturalism, the view that the natural world and the social world are roughly identical Spiritual naturalism, combines a naturalist approach to spiritual ways of looking at the world