自然辩证法是马克思主义和恩格斯思想的自然观和自然科学观的反映，体现了马克思主义哲学和恩格斯思想的世界观、认识论、方法论的统一，构成 马克思主义哲学的一个组成部分。F.恩格斯的《自然辩证法》（Dialectics of Nature）所开创的研究领域。自然界本身的辩证法是通过自然科学和技术的发展日益被揭示出来的，两个方面的研究密切相联，不可分割的。

《自然辩证法》是德国哲学家弗里德里希·恩格斯一部尚未完成的著作，是恩格斯多年来对自然科学研究的总结。对19世纪中期的主要自然科学成就用辩证唯物主义的方法进行了概括，并批判了自然科学中的形而上学和唯心主义观念。

Dialectics of Nature (German:Dialektik der Natur) is an unfinished 1883 work by Friedrich Engels that applies Marxist ideas – particularly those of dialectical materialism – to science.

In his 1939 preface to the work, the biologist J. B. S. Haldane states "most of the manuscript seems to have been written between 1872 and 1882, that is to say it refers to the science" of that era. "Hence it is often hard to follow if one does not know the history of the scientific practice of that time. The idea of what is now called the conservation of energy was beginning to permeate physics, chemistry and biology, but it was still very incompletely realised, and still more incompletely applied. Words such as 'force', 'motion', and 'vis viva' were used where we should now speak of energy". Some then controversial topics of Engels' day, pertaining to incomplete or faulty theories, are now settled, making some of Engels' essays dated. "Their interest lies not so much in their detailed criticism of theories, but in showing how Engels grappled with intellectual problems".